SigmaHQ/rules/windows/process_creation/sysmon_long_powershell_commandline.yml

title: Too Long PowerShell Commandlines
id: d0d28567-4b9a-45e2-8bbc-fb1b66a1f7f6
description: Detects Too long PowerShell command lines
references:
    - https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse
tags:
    - attack.execution
    - attack.t1059.001
status: experimental
author: oscd.community, Natalia Shornikova
date: 2020/10/06
modified: 2021/05/21
logsource:
    category: process_creation
    product: windows
detection:
    Powershell_selection:
      - CommandLine|contains:
        - 'powershell'
        - 'pwsh'
      - Description: 'Windows Powershell'
      - Product: 'PowerShell Core 6'
    Length_selection:
      CommandLine|re: '.{1000,}'
    condition: all of them
falsepositives:
 - Unknown
level: medium