sigmaDRL-1.1from SigmaHQ/sigma

Suspicious Start-Process PassThru

Powershell use PassThru option to start in background

Quality

100

FP risk

—

Forks

Views

ATT&CK techniques

T1036.003

Rule sourcerules/windows/powershell/powershell_script/posh_ps_susp_start_process.yml

title: Suspicious Start-Process PassThru
id: 0718cd72-f316-4aa2-988f-838ea8533277
status: test
description: Powershell use PassThru option to start in background
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1036.003/T1036.003.md
    - https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.management/Start-Process?view=powershell-5.1&viewFallbackFrom=powershell-7
author: frack113
date: 2022-01-15
tags:
    - attack.defense-evasion
    - attack.t1036.003
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection:
        ScriptBlockText|contains|all:
            - Start-Process
            - '-PassThru '
            - '-FilePath '
    condition: selection
falsepositives:
    - Legitimate PowerShell scripts
level: medium