Query: detection rule: Detects keywords that could indicate clearing PowerShell history
Matching passage: Sigma rule: Detects keywords that could indicate clearing PowerShell history. Logsource: windows / ps_module. Rule: title: Clear PowerShell History - PowerShell Module id: f99276ad-d122-4989-a09a-d00904a5f9d2 related: - id: dfba4ce1-e0ea-495f-986e-97140f31af2d type: derived status: test description: Detects keywords that could indicate clearing PowerShell history references: - https://gist.github.com/hook-s3c/7363a856c3cdbadeb71085147f042c1a author: Ilyas Ochkov, Jonhnathan Ribeiro, Daniil Yugoslavskiy, oscd.community date: 2019-10-25 modified: 2022-12-02 tags: - attack.stealth - attack.t1070.003 logsource: product: windows category: ps_module definition: 0ad03ef1-f21b-4a79-8ce8-e6900c54b65b detection: selection_1a_payload: Payload|contains: - del - Remove-Item - rm selection_1b_payload: Payload|contains: (Get-PSReadlineOption).HistorySavePath selection_payload_2: Payload|contains|all: - Set-PSReadlineOption - –HistorySaveStyle - SaveNothing selection_payload_3: Payload|contains|all: - Set-PSReadlineOption - -HistorySaveStyle - SaveNothing condition: 1 of selection_payload_* or all of selection_1* falsepositives: - Legitimate PowerShell scripts level: medium
Near-miss passage: Sigma rule: Detects suspicious PowerShell invocation command parameters. Logsource: windows / ps_script. Rule: title: Suspicious PowerShell Invocations - Specific id: ae7fbf8e-f3cb-49fd-8db4-5f3bed522c71 related: - id: fce5f582-cc00-41e1-941a-c6fabf0fdb8c type: obsolete - id: 8ff28fdd-e2fa-4dfa-aeda-ef3d61c62090 type: similar - id: 536e2947-3729-478c-9903-745aaffe60d2 type: similar status: test description: Detects suspicious PowerShell invocation command parameters references: - Internal Research - https://github.com/HackTricks-wiki/hacktricks/blob/e4c7b21b8f36c97c35b7c622732b38a189ce18f7/src/windows-hardening/windows-local-privilege-escalation/privilege-escalation-with-autorun-binaries.md author: Florian Roth (Nextron Systems), Jonhnathan Ribeiro date: 2017-03-05 modified: 2025-02-17 tags: - attack.execution - attack.t1059.001 logsource: product: windows category: ps_script definition: 'Requirements: Script Block Logging must be enabled' detection: selection_convert_b64: ScriptBlockText|contains|all: - -nop - ' -w ' - hidden - ' -c ' - '[Convert]::FromBase64String' selection_iex_selection: ScriptBlockText|contains|all: - ' -w ' - hidden - -noni - -nop - ' -c ' - iex - New-Object selection_enc_selection: ScriptBlockText|contains|all: - ' -w ' - hidden - -ep - bypass - -Enc selection_reg_selection: ScriptBlockText|contains|all: - powershell - reg - add ScriptBlockText|contains: - \software\microsoft\windows\currentversion\run - \software\wow6432node\microsoft\windows\currentversion\run - \software\microsoft\windows\currentversion\policies\explorer\run selection_webclient_selection: ScriptBlockText|contains|all: - bypass - -noprofile - -windowstyle - hidden - new-object - system.net.webclient - .download selection_iex_webclient: ScriptBlockText|contains|all: - iex - New-Object - Net.WebClient - .Download filter_chocolatey: ScriptBlockText|contains: - (New-Object System.Net.WebClient).DownloadString('https://community.chocolatey.org/install.ps1 - (New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1') - Write-ChocolateyWarning condition: 1 of selection_* and not 1 of filter_* falsepositives: - Unknown level: high