Clear PowerShell History

SigmaHQ Detections@sigmaHQ

•updated Aug 12, 2024•0•15

This rule detects attempts to clear PowerShell command history, which adversaries might do to remove traces of their activities. It looks for specific PowerShell commands and keywords related to deleting history files or configuring PowerShell to not save history. This includes commands like 'del', 'Remove-Item', 'rm' in conjunction with the PowerShell history path, or setting 'Set-PSReadlineOption -HistorySaveStyle SaveNothing'.