Suspicious PowerShell Invocation From Script Engines

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About the rule

Rule Type

Standard

Rule Description

Detects suspicious powershell invocations from interpreters or unusual programs

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Process started" AND (PARENTPROCESSNAME endswith "\wscript.exe,\cscript.exe" AND PROCESSNAME endswith "\powershell.exe,\pwsh.exe") AND CWD notcontains "\Health Service State" select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

Florian Roth (Nextron Systems)