Powershell Executed From Headless ConHost Process

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About the rule

Rule Type

Standard

Rule Description

Detects the use of powershell commands from headless ConHost window. The "--headless" flag hides the windows from the user upon execution.

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Process started" AND (PROCESSNAME endswith "\conhost.exe" OR ORIGINALFILENAME = "CONHOST.EXE") AND (COMMANDLINE contains "--headless" AND COMMANDLINE contains "powershell") select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

Matt Anderson (Huntress)