-
Notifications
You must be signed in to change notification settings - Fork 40
/
UAL-Analyzer.ps1
7287 lines (6418 loc) · 534 KB
/
UAL-Analyzer.ps1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
# UAL-Analyzer
#
# @author: Martin Willing
# @copyright: Copyright (c) 2024 Martin Willing. All rights reserved. Licensed under the MIT license.
# @contact: Any feedback or suggestions are always welcome and much appreciated - [email protected]
# @url: https://lethal-forensics.com/
# @date: 2024-11-21
#
#
# ██╗ ███████╗████████╗██╗ ██╗ █████╗ ██╗ ███████╗ ██████╗ ██████╗ ███████╗███╗ ██╗███████╗██╗ ██████╗███████╗
# ██║ ██╔════╝╚══██╔══╝██║ ██║██╔══██╗██║ ██╔════╝██╔═══██╗██╔══██╗██╔════╝████╗ ██║██╔════╝██║██╔════╝██╔════╝
# ██║ █████╗ ██║ ███████║███████║██║█████╗█████╗ ██║ ██║██████╔╝█████╗ ██╔██╗ ██║███████╗██║██║ ███████╗
# ██║ ██╔══╝ ██║ ██╔══██║██╔══██║██║╚════╝██╔══╝ ██║ ██║██╔══██╗██╔══╝ ██║╚██╗██║╚════██║██║██║ ╚════██║
# ███████╗███████╗ ██║ ██║ ██║██║ ██║███████╗ ██║ ╚██████╔╝██║ ██║███████╗██║ ╚████║███████║██║╚██████╗███████║
# ╚══════╝╚══════╝ ╚═╝ ╚═╝ ╚═╝╚═╝ ╚═╝╚══════╝ ╚═╝ ╚═════╝ ╚═╝ ╚═╝╚══════╝╚═╝ ╚═══╝╚══════╝╚═╝ ╚═════╝╚══════╝
#
#
# Dependencies:
#
# ImportExcel v7.8.10 (2024-10-21)
# https://github.com/dfinke/ImportExcel
#
# IPinfo CLI 3.3.1 (2024-03-01)
# https://ipinfo.io/signup?ref=cli --> Sign up for free
# https://github.com/ipinfo/cli
#
# xsv v0.13.0 (2018-05-12)
# https://github.com/BurntSushi/xsv
#
#
# Tested on Windows 10 Pro (x64) Version 22H2 (10.0.19045.5131) and PowerShell 5.1 (5.1.19041.5129)
# Tested on Windows 10 Pro (x64) Version 22H2 (10.0.19045.5131) and PowerShell 7.4.6
#
#
#############################################################################################################################################################################################
#############################################################################################################################################################################################
<#
.SYNOPSIS
UAL-Analyzer - Automated Processing of M365 Unified Audit Logs for DFIR
.DESCRIPTION
UAL-Analyzer.ps1 is a PowerShell script utilized to simplify the analysis of M365 Unified Audit Logs extracted via "Microsoft Extractor Suite" by Invictus Incident Response.
https://github.com/invictus-ir/Microsoft-Extractor-Suite (Microsoft-Extractor-Suite v2.1.1)
https://microsoft-365-extractor-suite.readthedocs.io/en/latest/functionality/UnifiedAuditLog.html
Single User Audit
.PARAMETER OutputDir
Specifies the output directory. Default is "$env:USERPROFILE\Desktop\UAL-Analyzer".
Note: The subdirectory 'UAL-Analyzer' is automatically created.
.PARAMETER Path
Specifies the path to the CSV-based input file (UAL-Combined.csv).
.EXAMPLE
PS> .\UAL-Analyzer.ps1
.EXAMPLE
PS> .\UAL-Analyzer.ps1 -Path "$env:USERPROFILE\Desktop\UAL-Combined.csv"
.EXAMPLE
PS> .\UAL-Analyzer.ps1 -Path "H:\Microsoft-Extractor-Suite\UAL-Combined.csv" -OutputDir "H:\Microsoft-Analyzer-Suite"
.NOTES
Author - Martin Willing
.LINK
https://lethal-forensics.com/
#>
#############################################################################################################################################################################################
#############################################################################################################################################################################################
# Notes
# Audit (Standard)
# The default retention period for Audit (Standard) has changed from 90 days to 180 days.
# Audit (Standard) logs generated before October 17, 2023 are retained for 90 days. Audit (Standard) logs generated on or after October 17, 2023 follow the new default retention of 180 days.
# Audit (Premium)
# To retain an audit log for longer than 180 days (and up to 1 year), the user who generates the audit log (by performing an audited activity) must be assigned an Office 365 E5 or Microsoft 365 E5 license or have a Microsoft 365 E5 Compliance or E5 eDiscovery and Audit add-on license.
# To retain audit logs for 10 years, the user who generates the audit log must also be assigned a 10-year audit log retention add-on license in addition to an E5 license.
# https://learn.microsoft.com/en-us/purview/audit-log-retention-policies#default-audit-log-retention-policy
##############################################################################################################################
# Audit (Standard) # Audit (Premium) #
##############################################################################################################################
# 180 days # 180 days --> 365 days # 10 years #
##############################################################################################################################
# # Office 365 E5 # 10-year audit log retention add-on license in addition to an E5 license #
# # Microsoft 365 E5 # #
# # Microsoft 365 E5 Compliance # #
# # E5 eDiscovery # #
# # Audit add-on license # #
##############################################################################################################################
#############################################################################################################################################################################################
#############################################################################################################################################################################################
#region CmdletBinding
[CmdletBinding()]
Param(
[String]$Path,
[String]$OutputDir
)
#endregion CmdletBinding
#############################################################################################################################################################################################
#############################################################################################################################################################################################
#region Initialisations
# Set Progress Preference to Silently Continue
$OriginalProgressPreference = $Global:ProgressPreference
$Global:ProgressPreference = 'SilentlyContinue'
#endregion Initialisations
#############################################################################################################################################################################################
#############################################################################################################################################################################################
#region Declarations
# Declarations
# Script Root
if ($PSVersionTable.PSVersion.Major -gt 2)
{
# PowerShell 3+
$SCRIPT_DIR = $PSScriptRoot
}
else
{
# PowerShell 2
$SCRIPT_DIR = Split-Path -Parent $MyInvocation.MyCommand.Definition
}
# Colors
Add-Type -AssemblyName System.Drawing
$script:Green = [System.Drawing.Color]::FromArgb(0,176,80) # Green
$script:Orange = [System.Drawing.Color]::FromArgb(255,192,0) # Orange
# Output Directory
if (!($OutputDir))
{
$script:OUTPUT_FOLDER = "$env:USERPROFILE\Desktop\UAL-Analyzer" # Default
}
else
{
if ($OutputDir -cnotmatch '.+(?=\\)')
{
Write-Host "[Error] You must provide a valid directory path." -ForegroundColor Red
Exit
}
else
{
$script:OUTPUT_FOLDER = "$OutputDir\UAL-Analyzer" # Custom
}
}
# Tools
# IPinfo CLI
$script:IPinfo = "$SCRIPT_DIR\Tools\IPinfo\ipinfo.exe"
# xsv
$script:xsv = "$SCRIPT_DIR\Tools\xsv\xsv.exe"
# ASN Whitelist
$script:Whitelist = (Import-Csv "$SCRIPT_DIR\Whitelists\ASN-Whitelist.csv" -Delimiter "," | Select-Object -ExpandProperty ASN) -join "|"
# Configuration File
if(!(Test-Path "$PSScriptRoot\Config.ps1"))
{
Write-Host "[Error] Config.ps1 NOT found." -ForegroundColor Red
}
else
{
. "$PSScriptRoot\Config.ps1"
}
#endregion Declarations
#############################################################################################################################################################################################
#############################################################################################################################################################################################
#region Header
# Windows Title
$DefaultWindowsTitle = $Host.UI.RawUI.WindowTitle
$Host.UI.RawUI.WindowTitle = "UAL-Analyzer - Automated Processing of M365 Unified Audit Logs for DFIR"
# Check if the PowerShell script is being run with admin rights
if (!([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator))
{
Write-Host "[Error] This PowerShell script must be run with admin rights." -ForegroundColor Red
$Host.UI.RawUI.WindowTitle = "$DefaultWindowsTitle"
Exit
}
# Flush Output Directory
if (Test-Path "$OUTPUT_FOLDER")
{
Get-ChildItem -Path "$OUTPUT_FOLDER" -Force -Recurse -ErrorAction SilentlyContinue | Remove-Item -Force -Recurse
New-Item "$OUTPUT_FOLDER" -ItemType Directory -Force | Out-Null
}
else
{
New-Item "$OUTPUT_FOLDER" -ItemType Directory -Force | Out-Null
}
# Add the required MessageBox class (Windows PowerShell)
Add-Type -AssemblyName System.Windows.Forms
# Function Get-FileSize
Function Get-FileSize()
{
Param ([long]$Length)
If ($Length -gt 1TB) {[string]::Format("{0:0.00} TB", $Length / 1TB)}
ElseIf ($Length -gt 1GB) {[string]::Format("{0:0.00} GB", $Length / 1GB)}
ElseIf ($Length -gt 1MB) {[string]::Format("{0:0.00} MB", $Length / 1MB)}
ElseIf ($Length -gt 1KB) {[string]::Format("{0:0.00} KB", $Length / 1KB)}
ElseIf ($Length -gt 0) {[string]::Format("{0:0.00} Bytes", $Length)}
Else {""}
}
# Select Log File
if(!($Path))
{
Function Get-LogFile($InitialDirectory)
{
[System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms") | Out-Null
$OpenFileDialog = New-Object System.Windows.Forms.OpenFileDialog
$OpenFileDialog.InitialDirectory = $InitialDirectory
$OpenFileDialog.Filter = "Unified Audit Log Files |UAL-Combined.csv|All Files (*.*)|*.*"
$OpenFileDialog.ShowDialog()
$OpenFileDialog.Filename
$OpenFileDialog.ShowHelp = $true
$OpenFileDialog.Multiselect = $false
}
$Result = Get-LogFile
if($Result -eq "OK")
{
$script:LogFile = $Result[1]
}
else
{
$Host.UI.RawUI.WindowTitle = "$DefaultWindowsTitle"
Exit
}
}
else
{
$script:LogFile = $Path
}
# Create a record of your PowerShell session to a text file
Start-Transcript -Path "$OUTPUT_FOLDER\Transcript.txt"
# Get Start Time
$startTime = (Get-Date)
# Logo
$Logo = @"
██╗ ███████╗████████╗██╗ ██╗ █████╗ ██╗ ███████╗ ██████╗ ██████╗ ███████╗███╗ ██╗███████╗██╗ ██████╗███████╗
██║ ██╔════╝╚══██╔══╝██║ ██║██╔══██╗██║ ██╔════╝██╔═══██╗██╔══██╗██╔════╝████╗ ██║██╔════╝██║██╔════╝██╔════╝
██║ █████╗ ██║ ███████║███████║██║█████╗█████╗ ██║ ██║██████╔╝█████╗ ██╔██╗ ██║███████╗██║██║ ███████╗
██║ ██╔══╝ ██║ ██╔══██║██╔══██║██║╚════╝██╔══╝ ██║ ██║██╔══██╗██╔══╝ ██║╚██╗██║╚════██║██║██║ ╚════██║
███████╗███████╗ ██║ ██║ ██║██║ ██║███████╗ ██║ ╚██████╔╝██║ ██║███████╗██║ ╚████║███████║██║╚██████╗███████║
╚══════╝╚══════╝ ╚═╝ ╚═╝ ╚═╝╚═╝ ╚═╝╚══════╝ ╚═╝ ╚═════╝ ╚═╝ ╚═╝╚══════╝╚═╝ ╚═══╝╚══════╝╚═╝ ╚═════╝╚══════╝
"@
Write-Output ""
Write-Output "$Logo"
Write-Output ""
# Header
Write-Output "UAL-Analyzer - Automated Processing of M365 Unified Audit Logs for DFIR"
Write-Output "(c) 2024 Martin Willing at Lethal-Forensics (https://lethal-forensics.com/)"
Write-Output ""
# Analysis date (ISO 8601)
$script:AnalysisDate = [datetime]::Now.ToUniversalTime().ToString("yyyy-MM-dd HH:mm:ss")
Write-Output "Analysis date: $AnalysisDate UTC"
Write-Output ""
# Create HashTable and import 'Application-Blacklist.csv'
$script:ApplicationBlacklist_HashTable = [ordered]@{}
if (Test-Path "$SCRIPT_DIR\Blacklists\Application-Blacklist.csv")
{
if([int](& $xsv count "$SCRIPT_DIR\Blacklists\Application-Blacklist.csv") -gt 0)
{
Import-Csv "$SCRIPT_DIR\Blacklists\Application-Blacklist.csv" -Delimiter "," | ForEach-Object { $ApplicationBlacklist_HashTable[$_.AppId] = $_.AppDisplayName,$_.Severity }
# Count Ingested Properties
$Count = $ApplicationBlacklist_HashTable.Count
Write-Output "[Info] Initializing 'Application-Blacklist.csv' Lookup Table ($Count) ..."
}
}
# Create HashTable and import 'ASN-Blacklist.csv'
$script:AsnBlacklist_HashTable = [ordered]@{}
if (Test-Path "$SCRIPT_DIR\Blacklists\ASN-Blacklist.csv")
{
if([int](& $xsv count "$SCRIPT_DIR\Blacklists\ASN-Blacklist.csv") -gt 0)
{
Import-Csv "$SCRIPT_DIR\Blacklists\ASN-Blacklist.csv" -Delimiter "," | ForEach-Object { $AsnBlacklist_HashTable[$_.ASN] = $_.OrgName,$_.Info }
# Count Ingested Properties
$Count = $AsnBlacklist_HashTable.Count
Write-Output "[Info] Initializing 'ASN-Blacklist.csv' Lookup Table ($Count) ..."
}
}
# Create HashTable and import 'Country-Blacklist.csv'
$script:CountryBlacklist_HashTable = [ordered]@{}
if (Test-Path "$SCRIPT_DIR\Blacklists\Country-Blacklist.csv")
{
if([int](& $xsv count "$SCRIPT_DIR\Blacklists\Country-Blacklist.csv") -gt 0)
{
Import-Csv "$SCRIPT_DIR\Blacklists\Country-Blacklist.csv" -Delimiter "," | ForEach-Object { $CountryBlacklist_HashTable[$_."Country Name"] = $_.Country }
# Count Ingested Properties
$Count = $CountryBlacklist_HashTable.Count
Write-Output "[Info] Initializing 'Country-Blacklist.csv' Lookup Table ($Count) ..."
}
}
#endregion Header
#############################################################################################################################################################################################
#############################################################################################################################################################################################
#region Analysis
# Unified Audit Logs
Function Start-Processing {
$StartTime_Processing = (Get-Date)
# Input-Check
if (!(Test-Path "$LogFile" -PathType Leaf))
{
Write-Host "[Error] $LogFile does not exist." -ForegroundColor Red
Write-Host ""
Stop-Transcript
$Host.UI.RawUI.WindowTitle = "$DefaultWindowsTitle"
Exit
}
# Check File Extension
$Extension = [IO.Path]::GetExtension($LogFile)
if (!($Extension -eq ".csv" ))
{
Write-Host "[Error] No CSV File provided." -ForegroundColor Red
Write-Host ""
Stop-Transcript
$Host.UI.RawUI.WindowTitle = "$DefaultWindowsTitle"
Exit
}
# Check IPinfo CLI Access Token
if ("$Token" -eq "access_token")
{
Write-Host "[Error] No IPinfo CLI Access Token provided. Please add your personal access token to 'Config.ps1'" -ForegroundColor Red
Write-Host ""
Stop-Transcript
$Host.UI.RawUI.WindowTitle = "$DefaultWindowsTitle"
Exit
}
# UserId
$UserIds = Import-Csv -Path "$LogFile" -Delimiter "," | Select-Object UserIds | Sort-Object -Unique
$Count = ($UserIds | Measure-Object).Count
if ($Count -gt 1)
{
Write-Host "[Error] Single User Audit ONLY." -ForegroundColor Red
Stop-Transcript
$Host.UI.RawUI.WindowTitle = "$DefaultWindowsTitle"
Exit
}
else
{
$UserId = ($UserIds).UserIds
}
# Input Size
$InputSize = Get-FileSize((Get-Item "$LogFile").Length)
Write-Output "[Info] Total Input Size: $InputSize"
# Count rows of CSV (w/ thousands separators)
[int]$Count = & $xsv count "$LogFile"
$Rows = '{0:N0}' -f $Count | ForEach-Object {$_ -replace ' ','.'} # Replace Space with a dot (e.g. de-AT)
Write-Output "[Info] Total Lines: $Rows"
# Estimated Time (Average: 15 lines per second)
[int]$Average = "15"
$TotalSeconds = $Count / $Average
$TimeSpan = [TimeSpan]::FromSeconds($TotalSeconds)
# Processing M365 Unified Audit Logs
Write-Output "[Info] Processing M365 Unified Audit Logs ($UserId) ..."
New-Item "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV" -ItemType Directory -Force | Out-Null
New-Item "$OUTPUT_FOLDER\UnifiedAuditLogs\XLSX" -ItemType Directory -Force | Out-Null
# Get-Culture
# Get-Date
# Set-Culture -CultureInfo de-DE --> Get-Date => Dienstag, 27. Februar 2024 07:01:30
# Set-Culture -CultureInfo en-US --> Get-Date => Tuesday, February 27, 2024 7:00:43 AM
# Note: Restart PowerShell Console
# Check Thousands Separator
# (Get-Culture).NumberFormat.NumberGroupSeparator
# Check Timestamp Format
$Timestamp = (Import-Csv -Path "$LogFile" -Delimiter "," | Select-Object CreationDate -First 1).CreationDate
# de-DE
if ($Timestamp -match "\d{2}\.\d{2}\.\d{4} \d{2}:\d{2}:\d{2}")
{
$script:TimestampFormat = "dd.MM.yyyy HH:mm:ss"
}
# en-US
if ($Timestamp -match "\d{1,2}/\d{1,2}/\d{4} \d{1,2}:\d{2}:\d{2} (AM|PM)")
{
$script:TimestampFormat = "M/d/yyyy h:mm:ss tt"
}
# Time Frame
$StartDate = (Import-Csv -Path "$LogFile" -Delimiter "," | Select-Object @{Name="CreationDate";Expression={([DateTime]::ParseExact($_.CreationDate, "$TimestampFormat", [cultureinfo]::InvariantCulture).ToString("yyyy-MM-dd HH:mm:ss"))}} | Sort-Object { $_.CreationDate -as [datetime] } -Descending | Select-Object -Last 1).CreationDate
$EndDate = (Import-Csv -Path "$LogFile" -Delimiter "," | Select-Object @{Name="CreationDate";Expression={([DateTime]::ParseExact($_.CreationDate, "$TimestampFormat", [cultureinfo]::InvariantCulture).ToString("yyyy-MM-dd HH:mm:ss"))}} | Sort-Object { $_.CreationDate -as [datetime] } -Descending | Select-Object -First 1).CreationDate
Write-Output "[Info] Log data from $StartDate UTC until $EndDate UTC"
('[Info] Estimated Analysis Time: {0} h {1} min {2} sec' -f $TimeSpan.Hours, $TimeSpan.Minutes, $TimeSpan.Seconds)
# XLSX
# Untouched
if (Get-Module -ListAvailable -Name ImportExcel)
{
if (Test-Path "$LogFile")
{
if([int](& $xsv count -d "," "$LogFile") -gt 0)
{
$IMPORT = Import-Csv -Path "$LogFile" -Delimiter "," -Encoding UTF8 | Sort-Object { $_.CreationDate -as [datetime] } -Descending
$IMPORT | Export-Excel -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\XLSX\Untouched.xlsx" -NoNumberConversion * -FreezeTopRow -BoldTopRow -AutoSize -AutoFilter -WorkSheetname "UAL- Untouched" -CellStyleSB {
param($WorkSheet)
# BackgroundColor and FontColor for specific cells of TopRow
$BackgroundColor = [System.Drawing.Color]::FromArgb(50,60,220)
Set-Format -Address $WorkSheet.Cells["A1:J1"] -BackgroundColor $BackgroundColor -FontColor White
# HorizontalAlignment "Center" of columns A-D and F-J
$WorkSheet.Cells["A:D"].Style.HorizontalAlignment="Center"
$WorkSheet.Cells["F:J"].Style.HorizontalAlignment="Center"
}
}
}
}
# File Size (XLSX)
if (Test-Path "$OUTPUT_FOLDER\UnifiedAuditLogs\XLSX\1-Untouched.xlsx")
{
$Size = Get-FileSize((Get-Item "$OUTPUT_FOLDER\UnifiedAuditLogs\XLSX\1-Untouched.xlsx").Length)
Write-Output "[Info] File Size (XLSX) : $Size"
}
# AuditData
# CSV
Import-Csv -Path "$LogFile" -Delimiter "," | Select-Object -ExpandProperty AuditData | ConvertFrom-Json | Sort-Object { $_.CreationDate -as [datetime] } -Descending | Export-Csv -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV\AuditData.csv" -NoTypeInformation -Encoding UTF8
# XLSX
if (Get-Module -ListAvailable -Name ImportExcel)
{
if (Test-Path "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV\AuditData.csv")
{
if([int](& $xsv count -d "," "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV\AuditData.csv") -gt 0)
{
$IMPORT = Import-Csv "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV\AuditData.csv" -Delimiter ","
$IMPORT | Export-Excel -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\XLSX\AuditData.xlsx" -NoHyperLinkConversion * -NoNumberConversion * -FreezeTopRow -BoldTopRow -AutoSize -AutoFilter -WorkSheetname "AuditData" -CellStyleSB {
param($WorkSheet)
# BackgroundColor and FontColor for specific cells of TopRow
$BackgroundColor = [System.Drawing.Color]::FromArgb(50,60,220)
Set-Format -Address $WorkSheet.Cells["A1:AA1"] -BackgroundColor $BackgroundColor -FontColor White
# HorizontalAlignment "Center" of columns A-AA
$WorkSheet.Cells["A:AA"].Style.HorizontalAlignment="Center"
}
}
}
}
# Custom CSV
$Data = Import-Csv -Path "$LogFile" -Delimiter "," -Encoding UTF8 | Sort-Object { $_.CreationDate -as [datetime] } -Descending
$Results = @()
ForEach($Record in $Data)
{
$AuditData = $Record.AuditData | ConvertFrom-Json
$ClientIP = $AuditData.ClientIP | & $IPinfo grepip -o # Remove Port Number from IPv4 (if existing)
$UserLoggedIn = $AuditData | Where-Object { $_.Operation -eq "UserLoggedIn" }
if ($null -ne $UserLoggedIn)
{
$SessionId = ($AuditData | Where-Object { $_.Operation -eq "UserLoggedIn" } | Select-Object -ExpandProperty DeviceProperties | Where-Object {$_.Name -eq 'SessionId'}).Value
$UserAgent = ($AuditData | Where-Object { $_.Operation -eq "UserLoggedIn" } | Select-Object -ExpandProperty ExtendedProperties | Where-Object {$_.Name -eq 'UserAgent'}).Value
}
else
{
$SessionId = ($AuditData | Select-Object SessionId).SessionId
$UserAgent = $AuditData.UserAgent
}
$Line = [PSCustomObject]@{
"CreationDate" = ($Record | Select-Object @{Name="CreationDate";Expression={([DateTime]::ParseExact($_.CreationDate, "$TimestampFormat", [cultureinfo]::InvariantCulture).ToString("yyyy-MM-dd HH:mm:ss"))}}).CreationDate
"UserId" = $Record.UserIds
"RecordType" = $Record.RecordType
"Operation" = $Record.Operations
"ObjectId" = $AuditData.ObjectId
"ClientIP" = $ClientIP
"ClientIPAddress" = $AuditData.ClientIPAddress
"UserAgent" = $UserAgent
"ClientInfoString" = $AuditData.ClientInfoString
"RequestType" = ($AuditData | Where-Object { $_.Operation -eq "UserLoggedIn" } | Select-Object -ExpandProperty ExtendedProperties | Where-Object {$_.Name -eq 'RequestType'}).Value
"SessionId" = $SessionId
"InterSystemsId" = $AuditData.InterSystemsId # The GUID that track the actions across components within the Office 365 service
"DeviceName" = ($AuditData | Where-Object { $_.Operation -eq "UserLoggedIn" } | Select-Object -ExpandProperty DeviceProperties | Where-Object {$_.Name -eq 'DisplayName'}).Value
"DeviceId" = ($AuditData | Where-Object { $_.Operation -eq "UserLoggedIn" } | Select-Object -ExpandProperty DeviceProperties | Where-Object {$_.Name -eq 'Id'}).Value
"OS" = ($AuditData | Where-Object { $_.Operation -eq "UserLoggedIn" } | Select-Object -ExpandProperty DeviceProperties | Where-Object {$_.Name -eq 'OS'}).Value
"BrowserType" = ($AuditData | Where-Object { $_.Operation -eq "UserLoggedIn" } | Select-Object -ExpandProperty DeviceProperties | Where-Object {$_.Name -eq 'BrowserType'}).Value
"IsCompliant" = ($AuditData | Where-Object { $_.Operation -eq "UserLoggedIn" } | Select-Object -ExpandProperty DeviceProperties | Where-Object {$_.Name -eq 'IsCompliant'}).Value
"IsCompliantAndManaged" = ($AuditData | Where-Object { $_.Operation -eq "UserLoggedIn" } | Select-Object -ExpandProperty DeviceProperties | Where-Object {$_.Name -eq 'IsCompliantAndManaged'}).Value
"Workload" = $AuditData.Workload
}
$Results += $Line
}
$Results | Export-Csv -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV\Custom.csv" -NoTypeInformation -Encoding UTF8
# Custom XLSX
if (Get-Module -ListAvailable -Name ImportExcel)
{
if (Test-Path "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV\Custom.csv")
{
if([int](& $xsv count -d "," "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV\Custom.csv") -gt 0)
{
$IMPORT = Import-Csv "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV\Custom.csv" -Delimiter ","
$IMPORT | Export-Excel -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\XLSX\Custom.xlsx" -NoHyperLinkConversion * -NoNumberConversion * -FreezePane 2,5 -BoldTopRow -AutoSize -AutoFilter -WorkSheetname "Custom View" -CellStyleSB {
param($WorkSheet)
# BackgroundColor and FontColor for specific cells of TopRow
$BackgroundColor = [System.Drawing.Color]::FromArgb(50,60,220)
Set-Format -Address $WorkSheet.Cells["A1:S1"] -BackgroundColor $BackgroundColor -FontColor White
# HorizontalAlignment "Center" of columns A-D and F-S
$WorkSheet.Cells["A:D"].Style.HorizontalAlignment="Center"
$WorkSheet.Cells["F:S"].Style.HorizontalAlignment="Center"
}
}
}
}
# XLSX
if (Get-Module -ListAvailable -Name ImportExcel)
{
if (Test-Path "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV\SessionCookieTheft.csv")
{
if([int](& $xsv count -d "," "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV\SessionCookieTheft.csv") -gt 0)
{
$IMPORT = Import-Csv "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV\SessionCookieTheft.csv" -Delimiter "," | Sort-Object @{Expression={ $_."ClientIP" -as [Int] }} -Descending
$IMPORT | Export-Excel -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\XLSX\SessionCookieTheft.xlsx" -FreezeTopRow -BoldTopRow -AutoSize -AutoFilter -WorkSheetname "SessionCookieTheft" -CellStyleSB {
param($WorkSheet)
# BackgroundColor and FontColor for specific cells of TopRow
$BackgroundColor = [System.Drawing.Color]::FromArgb(50,60,220)
Set-Format -Address $WorkSheet.Cells["A1:D1"] -BackgroundColor $BackgroundColor -FontColor White
# HorizontalAlignment "Center" of column A-D
$WorkSheet.Cells["A:D"].Style.HorizontalAlignment="Center"
# ConditionalFormatting - Different IP addresses (and User-Agents) indicate Session Cookie Theft
$LastRow = $WorkSheet.Dimension.End.Row
Add-ConditionalFormatting -Address $WorkSheet.Cells["B2:B$LastRow"] -WorkSheet $WorkSheet -RuleType 'Expression' -ConditionValue '=$B2>=2' -BackgroundColor Red # ClientIP
Add-ConditionalFormatting -Address $WorkSheet.Cells["C2:C$LastRow"] -WorkSheet $WorkSheet -RuleType 'Expression' -ConditionValue '=$C2>=2' -BackgroundColor Red # OS
Add-ConditionalFormatting -Address $WorkSheet.Cells["D2:D$LastRow"] -WorkSheet $WorkSheet -RuleType 'Expression' -ConditionValue '=$D2>=2' -BackgroundColor Red # BrowserType
}
}
}
}
# Stats
New-Item "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV" -ItemType Directory -Force | Out-Null
New-Item "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\XLSX" -ItemType Directory -Force | Out-Null
# ClientInfoString (Stats)
$Total = (Import-Csv -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV\Custom.csv" -Delimiter "," | Select-Object ClientInfoString | Measure-Object).Count
Import-Csv -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV\Custom.csv" -Delimiter "," -Encoding UTF8 | Group-Object ClientInfoString | Select-Object @{Name='ClientInfoString'; Expression={if($_.Name){$_.Name}else{'N/A'}}},Count,@{Name='PercentUse'; Expression={"{0:p2}" -f ($_.Count / $Total)}} | Sort-Object Count -Descending | Export-Csv -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\ClientInfoString.csv" -NoTypeInformation -Encoding UTF8
# XLSX
if (Test-Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\ClientInfoString.csv")
{
if([int](& $xsv count -d "," "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\ClientInfoString.csv") -gt 0)
{
$IMPORT = Import-Csv "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\ClientInfoString.csv" -Delimiter ","
$IMPORT | Export-Excel -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\XLSX\ClientInfoString.xlsx" -FreezeTopRow -BoldTopRow -AutoSize -AutoFilter -WorkSheetname "ClientInfoString" -CellStyleSB {
param($WorkSheet)
# BackgroundColor and FontColor for specific cells of TopRow
$BackgroundColor = [System.Drawing.Color]::FromArgb(50,60,220)
Set-Format -Address $WorkSheet.Cells["A1:C1"] -BackgroundColor $BackgroundColor -FontColor White
# HorizontalAlignment "Center" of columns B-C
$WorkSheet.Cells["B:C"].Style.HorizontalAlignment="Center"
# ConditionalFormatting
Add-ConditionalFormatting -Address $WorkSheet.Cells["A:C"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Client=OWA;Action=ViaProxy",$A1)))' -BackgroundColor Red # AiTM Server
}
}
}
# DeviceProperties (Stats)
$Data = Import-Csv -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV\Custom.csv" -Delimiter "," | Select-Object DeviceId
$Devices = ($Data | Where-Object {$_.DeviceId -ne '' } | Select-Object DeviceId -Unique | Measure-Object).Count
$Total = ($Data | Measure-Object).Count
Import-Csv -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV\Custom.csv" -Delimiter "," -Encoding UTF8 | Select-Object DeviceName,DeviceId | Group-Object DeviceName,DeviceId | Select-Object @{Name='DeviceName'; Expression={if($_.Values[0]){$_.Values[0]}else{'N/A'}}},@{Name='DeviceId'; Expression={if($_.Values[1]){$_.Values[0]}else{'N/A'}}},Count,@{Name='PercentUse'; Expression={"{0:p2}" -f ($_.Count / $Total)}} | Sort-Object Count -Descending | Export-Csv -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\DeviceProperties.csv" -NoTypeInformation -Encoding UTF8
# XLSX
if (Get-Module -ListAvailable -Name ImportExcel)
{
if (Test-Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\DeviceProperties.csv")
{
if([int](& $xsv count -d "," "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\DeviceProperties.csv") -gt 0)
{
$IMPORT = Import-Csv "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\DeviceProperties.csv" -Delimiter ","
$IMPORT | Export-Excel -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\XLSX\DeviceProperties.xlsx" -FreezeTopRow -BoldTopRow -AutoSize -AutoFilter -WorkSheetname "DeviceProperties" -CellStyleSB {
param($WorkSheet)
# BackgroundColor and FontColor for specific cells of TopRow
$BackgroundColor = [System.Drawing.Color]::FromArgb(50,60,220)
Set-Format -Address $WorkSheet.Cells["A1:D1"] -BackgroundColor $BackgroundColor -FontColor White
# HorizontalAlignment "Center" of column B-D
$WorkSheet.Cells["B:D"].Style.HorizontalAlignment="Center"
}
}
}
}
Write-Output "[Info] $Devices Device Identities found ($Total)"
# Operations (Stats)
# https://learn.microsoft.com/en-us/purview/audit-log-activities
# https://learn.microsoft.com/en-us/purview/ediscovery-search-for-activities-in-the-audit-log
# https://learn.microsoft.com/en-us/entra/identity/monitoring-health/reference-audit-activities
$Total = (Import-Csv -Path "$LogFile" -Delimiter "," | Select-Object Operations | Measure-Object).Count
Import-Csv -Path "$LogFile" -Delimiter "," -Encoding UTF8 | Group-Object Operations | Select-Object @{Name='Operation'; Expression={$_.Name}},Count,@{Name='PercentUse'; Expression={"{0:p2}" -f ($_.Count / $Total)}} | Sort-Object Count -Descending | Export-Csv -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\Operation.csv" -NoTypeInformation -Encoding UTF8
$Operations = (Import-Csv -Path "$LogFile" -Delimiter "," -Encoding UTF8 | Select-Object Operations | Sort-Object Operations -Unique | Measure-Object).Count
# XLSX
if (Get-Module -ListAvailable -Name ImportExcel)
{
if (Test-Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\Operation.csv")
{
if([int](& $xsv count -d "," "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\Operation.csv") -gt 0)
{
$IMPORT = Import-Csv "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\Operation.csv" -Delimiter ","
$IMPORT | Export-Excel -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\XLSX\Operation.xlsx" -FreezeTopRow -BoldTopRow -AutoSize -AutoFilter -WorkSheetname "Operations" -CellStyleSB {
param($WorkSheet)
# BackgroundColor and FontColor for specific cells of TopRow
$BackgroundColor = [System.Drawing.Color]::FromArgb(50,60,220)
Set-Format -Address $WorkSheet.Cells["A1:C1"] -BackgroundColor $BackgroundColor -FontColor White
# HorizontalAlignment "Center" of column B-C
$WorkSheet.Cells["B:C"].Style.HorizontalAlignment="Center"
# ConditionalFormatting - New mail box rule
$Cells = "A:C"
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("DeliverToMailboxAndForward",$A1)))' -BackgroundColor Red # M365 Portal
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("ForwardingAddress",$A1)))' -BackgroundColor Red # M365 Portal
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("ForwardingSmtpAddress",$A1)))' -BackgroundColor Red # M365 Portal
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("New-InboxRule",$A1)))' -BackgroundColor Red # PowerShell/API or M365 Portal
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Set-Mailbox",$A1)))' -BackgroundColor Red # M365 Portal
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("UpdateInboxRules",$A1)))' -BackgroundColor Red # Outlook client
# ConditionalFormatting - Modified or Deleted email box rule
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Set-InboxRule",$A1)))' -BackgroundColor Red # PowerShell/API or M365 Portal
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Remove-InboxRule",$A1)))' -BackgroundColor Red # PowerShell/API or M365 Portal
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Enable-InboxRule",$A1)))' -BackgroundColor Red # PowerShell/API or M365 Portal
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Disable-InboxRule",$A1)))' -BackgroundColor Red # PowerShell/API or M365 Portal
# ConditionalFormatting - New transport rule (Microsoft 365 Exchange Transport Rule Creation)
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("New-TransportRule",$A1)))' -BackgroundColor Red # PowerShell/API or M365 Portal
# ConditionalFormatting - Modified or Deleted transport rule (Microsoft 365 Exchange Transport Rule Modification)
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Set-TransportRule",$A1)))' -BackgroundColor Red # PowerShell/API or M365 Portal
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Remove-TransportRule",$A1)))' -BackgroundColor Red # PowerShell/API or M365 Portal
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Enable-TransportRule",$A1)))' -BackgroundColor Red # PowerShell/API or M365 Portal
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Disable-TransportRule",$A1)))' -BackgroundColor Red # PowerShell/API or M365 Portal
# ConditionalFormatting - Content Search Abuse
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("SearchStarted",$A1)))' -BackgroundColor Red # Content Search started
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("SearchExportDownloaded",$A1)))' -BackgroundColor Red # Export Content Search
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("ViewedSearchExported",$A1)))' -BackgroundColor Red # A user viewed a content search export in the compliance portal
# ConditionalFormatting - eDiscovery Abuse
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("CaseAdded",$A1)))' -BackgroundColor Red # An eDiscovery case was created
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("New-ComplianceSearch",$A1)))' -BackgroundColor Red # A new content search was created.
# ConditionalFormatting - OAuth Applications
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Add application.",$A1)))' -BackgroundColor Red # Add application
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Add app role assignment grant to user.",$A1)))' -BackgroundColor Red # Adding application permission to an app registration. For example, when you add delegated Graph API permissions.
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Add delegated permission grant.",$A1)))' -BackgroundColor Red # API permissions have been delegated to an application.
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Add owner to application.",$A1)))' -BackgroundColor Red
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Add owner to service principal.",$A1)))' -BackgroundColor Red
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Add service principal.",$A1)))' -BackgroundColor Red # Added service principal
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Consent to application.",$A1)))' -BackgroundColor Red # A user granted authorization to an application to access protected resources on their behalf
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Update application.",$A1)))' -BackgroundColor Red
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Update application Certificates and secrets management",$A1)))' -BackgroundColor Red # Update application - Certificates and secrets management
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Update service principal.",$A1)))' -BackgroundColor Red
# ConditionalFormatting - Business E-Mail Compromise (BEC)
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Add-MailboxPermission",$A1)))' -BackgroundColor Red # An administrator assigned the FullAccess mailbox permission to a user (known as a delegate) to another person's mailbox. The FullAccess permission allows the delegate to open the other person's mailbox, and read and manage the contents of the mailbox.
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Disable-InboxRule",$A1)))' -BackgroundColor Red
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Enable-InboxRule",$A1)))' -BackgroundColor Red
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("MoveToDeletedItems",$A1)))' -BackgroundColor Red # Moved messages to Deleted Items folder
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("HardDelete",$A1)))' -BackgroundColor Red # Purged messages from the mailbox
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("SendAs",$A1)))' -BackgroundColor Red # A message was sent using the SendAs permission. This means that another user sent the message as though it came from the mailbox owner.
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Set-MailboxJunkEmailConfiguration",$A1)))' -BackgroundColor Red # Bypass spam filters and successfully deliver spoofed messages to a targeted user’s mailbox
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("SoftDelete",$A1)))' -BackgroundColor Red # Deleted messages from Deleted Items folder
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("HygieneTenantEvents",$A1)))' -BackgroundColor Red # Hygiene events are related to outbound spam protection. These events are related to users who are restricted from sending email.
# ConditionalFormatting - SharePoint Auditing
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("AddedToSecureLink",$A1)))' -BackgroundColor Red # A user was added to the list of entities who can use a secure sharing link. A link that only works for specific people was secured to a user.
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("SearchQueryPerformed",$A1)))' -BackgroundColor Red # A user performed a search in SharePoint or OneDrive for Business.
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("SecureLinkCreated",$A1)))' -BackgroundColor Red # A secure sharing link was created to this item. A link that only works for specific people was created. It's usually followed by a series of AddedToSecureLink operations, which signify the users who were secured to the link.
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("SecureLinkUpdated",$A1)))' -BackgroundColor Red # A secure sharing link was updated. A link that only works for specific people was updated.
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("SharingInvitationCreated",$A1)))' -BackgroundColor Red # A user shared a resource in SharePoint Online or OneDrive for Business with a user who isn't in your organization's directory.
# ConditionalFormatting - Account Manipulation
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Add user.",$A1)))' -BackgroundColor Red # A user account was created
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Added member to group",$A1)))' -BackgroundColor Red # A member was added to a group
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Added member to role",$A1)))' -BackgroundColor Red # A member was added to a role
# ConditionalFormatting - Power Automate
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("CreateFlow",$A1)))' -BackgroundColor Red # A new flow was created (MicrosoftFlow)
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("PutConnection",$A1)))' -BackgroundColor Red # A connection was created or edited (MicrosoftFlow)
# ConditionalFormatting - Unified Audit Log Retention Policy Manipulation
# Note: UAL are retained for 180 days by default for all plans. However, if you have Office 365 E5, Microsoft 365 E5 or Microsoft 365 E5 Compliance add-on license you can enable an audit retention policy for up to 10 years.
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("New-UnifiedAuditLogRetentionPolicy",$A1)))' -BackgroundColor Red # This operation is recorded when a new retention policy is created in the Microsoft 365 Defender portal or the Microsoft Purview compliance portal.
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Set-UnifiedAuditLogRetentionPolicy",$A1)))' -BackgroundColor Red # This operation is recorded when an existing retention policy is modified in the Microsoft 365 Defender portal or the Microsoft Purview compliance portal.
Add-ConditionalFormatting -Address $WorkSheet.Cells["$Cells"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Remove-UnifiedAuditLogRetentionPolicy",$A1)))' -BackgroundColor Red # This operation is recorded when an existing retention policy is removed in the Microsoft 365 Defender portal or the Microsoft Purview compliance portal.
}
}
}
}
# RecordType (Stats)
$Total = (Import-Csv -Path "$LogFile" -Delimiter "," | Select-Object "File Path" | Measure-Object).Count
Import-Csv -Path "$LogFile" -Delimiter "," -Encoding UTF8 | Group-Object RecordType | Select-Object @{Name='RecordType'; Expression={$_.Name}},Count,@{Name='PercentUse'; Expression={"{0:p2}" -f ($_.Count / $Total)}} | Sort-Object Count -Descending | Export-Csv -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\RecordType.csv" -NoTypeInformation -Encoding UTF8
$RecordTypes = (Import-Csv -Path "$LogFile" -Delimiter "," -Encoding UTF8 | Select-Object RecordType | Sort-Object RecordType -Unique | Measure-Object).Count
# XLSX
if (Test-Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\RecordType.csv")
{
if([int](& $xsv count -d "," "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\RecordType.csv") -gt 0)
{
$IMPORT = Import-Csv "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\RecordType.csv" -Delimiter ","
$IMPORT | Export-Excel -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\XLSX\RecordType.xlsx" -FreezeTopRow -BoldTopRow -AutoSize -AutoFilter -WorkSheetname "RecordType" -CellStyleSB {
param($WorkSheet)
# BackgroundColor and FontColor for specific cells of TopRow
$BackgroundColor = [System.Drawing.Color]::FromArgb(50,60,220)
Set-Format -Address $WorkSheet.Cells["A1:C1"] -BackgroundColor $BackgroundColor -FontColor White
# HorizontalAlignment "Center" of column B-C
$WorkSheet.Cells["B:C"].Style.HorizontalAlignment="Center"
}
}
}
Write-Output "[Info] $RecordTypes RecordTypes and $Operations Operations found"
# RequestType (Stats)
$Total = (Import-Csv -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV\Custom.csv" -Delimiter "," | Select-Object RequestType | Where-Object {$_.RequestType -ne '' } | Measure-Object).Count
Import-Csv -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV\Custom.csv" -Delimiter "," | Select-Object RequestType | Where-Object {$_.RequestType -ne '' } | Where-Object {$null -ne ($_.PSObject.Properties | ForEach-Object {$_.Value})} | Group-Object RequestType | Select-Object @{Name='RequestType'; Expression={$_.Name}},Count,@{Name='PercentUse'; Expression={"{0:p2}" -f ($_.Count / $Total)}} | Sort-Object Count -Descending | Export-Csv -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\RequestType.csv" -NoTypeInformation -Encoding UTF8
# XLSX
if (Get-Module -ListAvailable -Name ImportExcel)
{
if (Test-Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\RequestType.csv")
{
if([int](& $xsv count -d "," "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\RequestType.csv") -gt 0)
{
$IMPORT = Import-Csv "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\RequestType.csv" -Delimiter ","
$IMPORT | Export-Excel -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\XLSX\RequestType.xlsx" -NoHyperLinkConversion * -FreezeTopRow -BoldTopRow -AutoSize -AutoFilter -WorkSheetname "RequestType" -CellStyleSB {
param($WorkSheet)
# BackgroundColor and FontColor for specific cells of TopRow
$BackgroundColor = [System.Drawing.Color]::FromArgb(50,60,220)
Set-Format -Address $WorkSheet.Cells["A1:C1"] -BackgroundColor $BackgroundColor -FontColor White
# HorizontalAlignment "Center" of column B-C
$WorkSheet.Cells["B:C"].Style.HorizontalAlignment="Center"
}
}
}
}
# RequestTypes --> Type of Authentication (Microsoft Entra Authentication)???
# Cmsi:Cmsi Check My Sign In (CMSI). For security reasons, user confirmation is required for this request. Indicates use of device code auth.
# Consent:Set ???
# Kmsi:kmsi Keep Me Signed In (KMSI) prompt --> Stay signed in?
# Login:login ???
# Login:reprocess This likely indicates that the user's session has expired. When the user attempts to access the application or service again, he is prompted to reauthenticate.
# Login:resume ???
# OAuth2:Authorize ???
# OAuth2:Login* This usually happens when a user is trying to sign into an application that uses Office 365 resources, and the application is requesting to authenticate the user by redirecting them to the OAuth 2.0 login process.
# OAuth2:Token This likely indicates a token request action in the OAuth 2.0 authorization framework. This token is then used to access protected resources on behalf of the user. When an application has successfully authenticated with the user's credentials, it will make a token request to receive an access token that allows it to access the user's resources in Office 365.
# OrgIdWsTrust2:process ???
# PermitSso:PermitSso ???
# Saml2:processrequest ???
# SAS:BeginAuth ???
# SAS:EndAuth ???
# SAS:ProcessAuth ???
# SSPR:end ???
# WindowsAuthenticationControllerusernamemixed ???
# WindowsAuthewnticationControllerwindowstransport ???
# WsFederation:wsfederation ???
# EndpointCall (AADSignInEventsBeta)
# Information about the AAD endpoint that the request was sent to and the type of request sent during sign in.
# User-Agent (Stats)
$Total = (Import-Csv -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV\Custom.csv" -Delimiter "," | Select-Object UserAgent | Where-Object {$_.UserAgent -ne '' } | Measure-Object).Count
Import-Csv -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\CSV\Custom.csv" -Delimiter "," | Select-Object UserAgent | Where-Object {$_.UserAgent -ne '' } | Where-Object {$null -ne ($_.PSObject.Properties | ForEach-Object {$_.Value})} | Group-Object UserAgent | Select-Object @{Name='UserAgent'; Expression={$_.Name}},Count,@{Name='PercentUse'; Expression={"{0:p2}" -f ($_.Count / $Total)}} | Sort-Object Count -Descending | Export-Csv -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\UserAgent.csv" -NoTypeInformation -Encoding UTF8
# XLSX
if (Get-Module -ListAvailable -Name ImportExcel)
{
if (Test-Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\UserAgent.csv")
{
if([int](& $xsv count -d "," "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\UserAgent.csv") -gt 0)
{
$IMPORT = Import-Csv "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\CSV\UserAgent.csv" -Delimiter ","
$IMPORT | Export-Excel -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Stats\XLSX\UserAgent.xlsx" -FreezeTopRow -BoldTopRow -AutoSize -AutoFilter -WorkSheetname "UserAgent" -CellStyleSB {
param($WorkSheet)
# BackgroundColor and FontColor for specific cells of TopRow
$BackgroundColor = [System.Drawing.Color]::FromArgb(50,60,220)
Set-Format -Address $WorkSheet.Cells["A1:C1"] -BackgroundColor $BackgroundColor -FontColor White
# HorizontalAlignment "Center" of column B-C
$WorkSheet.Cells["B:C"].Style.HorizontalAlignment="Center"
}
}
}
}
# Suspicious Operations
# Inbox Rules
# Inbox Rules let users automate actions on incoming emails when they match specific criteria, such as containing certain words in the subject line or coming from a particular sender.
# These actions can include moving messages to designated folders, marking them as read, or forwarding them to external addresses.
# New-InboxRule
# RecordType: ExchangeAdmin
# Operation: New-InboxRule --> Create a new Inbox Rule in a mailbox
# https://learn.microsoft.com/en-us/powershell/module/exchange/new-inboxrule?view=exchange-ps
# Hide Artifacts: Email Hiding Rules [T1564.008] --> https://attack.mitre.org/techniques/T1564/008/
$Import = Import-Csv -Path "$LogFile" -Delimiter "," -Encoding UTF8 | Where-Object { $_.RecordType -eq "ExchangeAdmin" } | Where-Object { $_.Operations -eq "New-InboxRule" } | Sort-Object { $_.CreationDate -as [datetime] } -Descending
$Count = [string]::Format('{0:N0}',($Import | Measure-Object).Count)
if ($Count -gt 0)
{
Write-Host "[Alert] Suspicious Operation(s) detected: New-InboxRule ($Count)" -ForegroundColor Red
New-Item "$OUTPUT_FOLDER\UnifiedAuditLogs\Suspicious-Operations\CSV" -ItemType Directory -Force | Out-Null
New-Item "$OUTPUT_FOLDER\UnifiedAuditLogs\Suspicious-Operations\XLSX" -ItemType Directory -Force | Out-Null
# CSV
$Import | Select-Object @{Name="CreationDate";Expression={([DateTime]::ParseExact($_.CreationDate, "$TimestampFormat", [cultureinfo]::InvariantCulture).ToString("yyyy-MM-dd HH:mm:ss"))}},UserIds,RecordType,Operations,AuditData,ResultIndex,ResultCount,Identity,IsValid,ObjectState | Export-Csv -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Suspicious-Operations\CSV\New-InboxRule.csv" -NoTypeInformation -Encoding UTF8
# XLSX
if (Get-Module -ListAvailable -Name ImportExcel)
{
if (Test-Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Suspicious-Operations\CSV\New-InboxRule.csv")
{
if([int](& $xsv count -d "," "$OUTPUT_FOLDER\UnifiedAuditLogs\Suspicious-Operations\CSV\New-InboxRule.csv") -gt 0)
{
$IMPORT = Import-Csv "$OUTPUT_FOLDER\UnifiedAuditLogs\Suspicious-Operations\CSV\New-InboxRule.csv" -Delimiter ","
$IMPORT | Export-Excel -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Suspicious-Operations\XLSX\New-InboxRule.xlsx" -FreezePane 2,2 -BoldTopRow -AutoSize -AutoFilter -WorkSheetname "New-InboxRule" -CellStyleSB {
param($WorkSheet)
# BackgroundColor and FontColor for specific cells of TopRow
$BackgroundColor = [System.Drawing.Color]::FromArgb(50,60,220)
Set-Format -Address $WorkSheet.Cells["A1:J1"] -BackgroundColor $BackgroundColor -FontColor White
# HorizontalAlignment "Center" of columns A-D and F-J
$WorkSheet.Cells["A:D"].Style.HorizontalAlignment="Center"
$WorkSheet.Cells["F:J"].Style.HorizontalAlignment="Center"
# ConditionalFormatting
Add-ConditionalFormatting -Address $WorkSheet.Cells["C:D"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("New-InboxRule",$D1)))' -BackgroundColor Red
}
}
}
}
# AuditData
# CSV
$Results = @()
ForEach($Record in $Import)
{
$AuditData = $Record.AuditData | ConvertFrom-Json
$Parameters = $AuditData.Parameters
# Parameters
New-Item "$OUTPUT_FOLDER\UnifiedAuditLogs\Suspicious-Operations\TXT" -ItemType Directory -Force | Out-Null
$Parameters | Out-File "$OUTPUT_FOLDER\UnifiedAuditLogs\Suspicious-Operations\TXT\New-InboxRule_Parameters.txt" -Append
$Line = [PSCustomObject]@{
"CreationDate" = $Record.CreationDate
"Id" = $AuditData.Id
"RecordType" = $Record.RecordType
"Operation" = $AuditData.Operation
"OrganizationId" = $AuditData.OrganizationId
"RecordType_AuditData" = $AuditData.RecordType
"ResultStatus" = $AuditData.ResultStatus
"UserKey" = $AuditData.UserKey
"UserType" = $AuditData.UserType
"Version" = $AuditData.Version
"Workload" = $AuditData.Workload
"ClientIP" = $AuditData.ClientIP
"ObjectId" = $AuditData.ObjectId
"UserId" = $AuditData.UserId
"AppId" = $AuditData.AppId
"ClientAppId" = $AuditData.ClientAppId
"ExternalAccess" = $AuditData.ExternalAccess
"OrganizationName" = $AuditData.OrganizationName
"OriginatingServer" = $AuditData.OriginatingServer
"AlwaysDeleteOutlookRulesBlob" = $Parameters | Where-Object { $_.Name -eq "AlwaysDeleteOutlookRulesBlob" } | Select-Object -ExpandProperty Value
"DeleteMessage" = $Parameters | Where-Object { $_.Name -eq "DeleteMessage" } | Select-Object -ExpandProperty Value # Hiding
"Force" = $Parameters | Where-Object { $_.Name -eq "Force" } | Select-Object -ExpandProperty Value
"From" = $Parameters | Where-Object { $_.Name -eq "From" } | Select-Object -ExpandProperty Value # Monitoring
"MoveToFolder" = $Parameters | Where-Object { $_.Name -eq "MoveToFolder" } | Select-Object -ExpandProperty Value # Hiding
"Name" = $Parameters | Where-Object { $_.Name -eq "Name" } | Select-Object -ExpandProperty Value
"FromAddressContainsWords" = $Parameters | Where-Object { $_.Name -eq "FromAddressContainsWords" } | Select-Object -ExpandProperty Value # Monitoring
"MyNameInToOrCcBox" = $Parameters | Where-Object { $_.Name -eq "MyNameInToOrCcBox" } | Select-Object -ExpandProperty Value # Hiding
"SubjectContainsWords" = $Parameters | Where-Object { $_.Name -eq "SubjectContainsWords" } | Select-Object -ExpandProperty Value # Monitoring
"MarkAsRead" = $Parameters | Where-Object { $_.Name -eq "MarkAsRead" } | Select-Object -ExpandProperty Value # Hiding
"StopProcessingRules" = $Parameters | Where-Object { $_.Name -eq "StopProcessingRules" } | Select-Object -ExpandProperty Value
"SessionId" = ($AuditData | Select-Object SessionId).SessionId
}
$Results += $Line
}
$Results | Export-Csv -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Suspicious-Operations\CSV\New-InboxRule_AuditData.csv" -NoTypeInformation -Encoding UTF8
# XLSX
if (Get-Module -ListAvailable -Name ImportExcel)
{
if (Test-Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Suspicious-Operations\CSV\New-InboxRule_AuditData.csv")
{
if([int](& $xsv count -d "," "$OUTPUT_FOLDER\UnifiedAuditLogs\Suspicious-Operations\CSV\New-InboxRule_AuditData.csv") -gt 0)
{
$IMPORT = Import-Csv "$OUTPUT_FOLDER\UnifiedAuditLogs\Suspicious-Operations\CSV\New-InboxRule_AuditData.csv" -Delimiter ","
$IMPORT | Export-Excel -Path "$OUTPUT_FOLDER\UnifiedAuditLogs\Suspicious-Operations\XLSX\New-InboxRule_AuditData.xlsx" -FreezePane 2,5 -BoldTopRow -AutoSize -AutoFilter -WorkSheetname "New-InboxRule" -CellStyleSB {
param($WorkSheet)
# BackgroundColor and FontColor for specific cells of TopRow
$BackgroundColor = [System.Drawing.Color]::FromArgb(50,60,220)
Set-Format -Address $WorkSheet.Cells["A1:AE1"] -BackgroundColor $BackgroundColor -FontColor White
# HorizontalAlignment "Center" of columns A-AE
$WorkSheet.Cells["A:AE"].Style.HorizontalAlignment="Center"
# ConditionalFormatting - New-InboxRule
Add-ConditionalFormatting -Address $WorkSheet.Cells["C:D"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("New-InboxRule",$D1)))' -BackgroundColor Red
# ConditionalFormatting - DeleteMessage
Add-ConditionalFormatting -Address $WorkSheet.Cells["U:U"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("True",$U1)))' -BackgroundColor Red
# ConditionalFormatting - MoveToFolder
Add-ConditionalFormatting -Address $WorkSheet.Cells["X:X"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Archive",$X1)))' -BackgroundColor Red # English
Add-ConditionalFormatting -Address $WorkSheet.Cells["X:X"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Conversation History",$X1)))' -BackgroundColor Red # English
Add-ConditionalFormatting -Address $WorkSheet.Cells["X:X"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Historial de conversaciones",$X1)))' -BackgroundColor Red # Spanish
Add-ConditionalFormatting -Address $WorkSheet.Cells["X:X"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("RSS-подписки",$X1)))' -BackgroundColor Red # Russian
Add-ConditionalFormatting -Address $WorkSheet.Cells["X:X"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("RSS-Feeds",$X1)))' -BackgroundColor Red # English
Add-ConditionalFormatting -Address $WorkSheet.Cells["X:X"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("RSS Subscriptions",$X1)))' -BackgroundColor Red # English
Add-ConditionalFormatting -Address $WorkSheet.Cells["X:X"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("RSS-feeder",$X1)))' -BackgroundColor Red # Norwegian
Add-ConditionalFormatting -Address $WorkSheet.Cells["X:X"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("RSS-syötteet",$X1)))' -BackgroundColor Red # Finnish
Add-ConditionalFormatting -Address $WorkSheet.Cells["X:X"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("Junk-E-Mail",$X1)))' -BackgroundColor Red # English
# ConditionalFormatting - MarkAsRead
Add-ConditionalFormatting -Address $WorkSheet.Cells["AC:AC"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("True",$AC1)))' -BackgroundColor Red
# ConditionalFormatting - Name
Add-ConditionalFormatting -Address $WorkSheet.Cells["Y:Y"] -WorkSheet $WorkSheet -RuleType 'Expression' -ConditionValue '$Y1="."' -BackgroundColor Red
Add-ConditionalFormatting -Address $WorkSheet.Cells["Y:Y"] -WorkSheet $WorkSheet -RuleType 'Expression' -ConditionValue '$Y1=";"' -BackgroundColor Red
Add-ConditionalFormatting -Address $WorkSheet.Cells["Y:Y"] -WorkSheet $WorkSheet -RuleType 'Expression' -ConditionValue '$Y1="|"' -BackgroundColor Red
Add-ConditionalFormatting -Address $WorkSheet.Cells["Y:Y"] -WorkSheet $WorkSheet -RuleType 'Expression' -ConditionValue '$Y1=".."' -BackgroundColor Red
Add-ConditionalFormatting -Address $WorkSheet.Cells["Y:Y"] -WorkSheet $WorkSheet -RuleType 'Expression' -ConditionValue '$Y1="..."' -BackgroundColor Red
Add-ConditionalFormatting -Address $WorkSheet.Cells["Y:Y"] -WorkSheet $WorkSheet -RuleType 'Expression' -ConditionValue '$Y1=".;"' -BackgroundColor Red
Add-ConditionalFormatting -Address $WorkSheet.Cells["Y:Y"] -WorkSheet $WorkSheet -RuleType 'Expression' -ConditionValue '$Y1=".,"' -BackgroundColor Red
Add-ConditionalFormatting -Address $WorkSheet.Cells["Y:Y"] -WorkSheet $WorkSheet -RuleType 'Expression' -ConditionValue '$Y1=".,.,"' -BackgroundColor Red
# ConditionalFormatting - StopProcessingRules
Add-ConditionalFormatting -Address $WorkSheet.Cells["AD:AD"] -WorkSheet $WorkSheet -RuleType 'Expression' 'NOT(ISERROR(FIND("True",$AD1)))' -BackgroundColor Red
}
}
}
}
}
# Set-InboxRule
# RecordType: ExchangeAdmin
# Operation: Set-InboxRule --> Change an existing mailbox, often used for setting up forwarding rules
# The Set-InboxRule cmdlet allows you to modify the rule conditions, exceptions, and actions. When you create, modify, remove, enable, or disable an Inbox rule in Exchange PowerShell, any client-side rules created by Microsoft Outlook are removed.
# https://learn.microsoft.com/en-us/powershell/module/exchange/set-inboxrule?view=exchange-ps
$Import = Import-Csv -Path "$LogFile" -Delimiter "," -Encoding UTF8 | Where-Object { $_.RecordType -eq "ExchangeAdmin" } | Where-Object { $_.Operations -eq "Set-InboxRule" } | Sort-Object { $_.CreationDate -as [datetime] } -Descending
$Count = [string]::Format('{0:N0}',($Import | Measure-Object).Count)
if ($Count -gt 0)
{
Write-Host "[Alert] Suspicious Operation(s) detected: Set-InboxRule ($Count)" -ForegroundColor Red
New-Item "$OUTPUT_FOLDER\UnifiedAuditLogs\Suspicious-Operations\CSV" -ItemType Directory -Force | Out-Null
New-Item "$OUTPUT_FOLDER\UnifiedAuditLogs\Suspicious-Operations\XLSX" -ItemType Directory -Force | Out-Null