SigmaHQ/rules/windows/powershell/powershell_clear_powershell_history.yml
2019-10-29 03:44:22 +03:00

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title: Clear PowerShell History
status: experimental
description: Detects keywords that could indicate clearing PowerShell history
date: 2019/10/25
author: Ilyas Ochkov, oscd.community
references:
- https://gist.github.com/hook-s3c/7363a856c3cdbadeb71085147f042c1a
tags:
- attack.defense_evasion
- attack.t1146
logsource:
product: windows
service: powershell
detection:
keywords:
- 'del (Get-PSReadlineOption).HistorySavePath'
- 'Set-PSReadlineOption HistorySaveStyle SaveNothing'
- 'Remove-Item (Get-PSReadlineOption).HistorySavePath'
- 'rm (Get-PSReadlineOption).HistorySavePath'
condition: keywords
falsepositives:
- some PS-scripts
level: medium