User Discovery And Export Via Get-ADUser Cmdlet

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About the rule

Rule Type

Standard

Rule Description

Detects usage of the Get-ADUser cmdlet to collect user information and output it to a file

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Process started" AND (PROCESSNAME endswith "\powershell.exe,\pwsh.exe" OR ORIGINALFILENAME = "PowerShell.EXE,pwsh.dll") AND ((COMMANDLINE contains "Get-ADUser " AND COMMANDLINE contains " -Filter *") AND COMMANDLINE contains " > , | Select ,Out-File,Set-Content,Add-Content") select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Active Directory

Author

Nasreddine Bencherchali (Nextron Systems)