PowerShell Script Change Permission Via Set-Acl

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About the rule

Rule Type

Standard

Rule Description

Detects PowerShell execution to set the ACL of a file or a folder

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Process started" AND (ORIGINALFILENAME = "PowerShell.EXE,pwsh.dll" OR PROCESSNAME endswith "\powershell.exe,\pwsh.exe") AND (COMMANDLINE contains "Set-Acl " AND COMMANDLINE contains "-AclObject " AND COMMANDLINE contains "-Path ") select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

Nasreddine Bencherchali (Nextron Systems)