Suspicious LSA PPL Protection Setting Change through CommandLine (via process_creation)

title: Suspicious LSA PPL Protection Setting Change through CommandLine (via process_creation)
id: 6c8edb0d-fa3f-5ba7-bf52-a2d51f416fc9
status: stable
description: This rule detects modification of LSA PPL protection settings via CommandLine. It may indicate an attempt to disable protection and enable credential dumping tools to access LSASS process memory.
references:
    - https://attack.mitre.org/techniques/T1689/
    - https://thedfirreport.com/2022/03/21/apt35-automates-initial-access-using-proxyshell/
    - https://github.com/shoober420/windows11-scripts/blob/38d83331738cd713ccb42f2c4557d17a27aefd98/Windows11Tweaks.bat#L1825
author: Huntrule Team
date: 2026-04-11
tags:
    - attack.defense-impairment
    - attack.t1689
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith:
              - '\reg.exe'
              - '\powershell.exe'
              - '\pwsh.exe'
        - OriginalFileName:
              - 'reg.exe'
              - 'powershell.exe'
              - 'pwsh.dll'
    selection_cli_action:
        CommandLine|contains|all:
            - 'ControlSet'
            - '\Control\Lsa'
        CommandLine|contains:
            - 'Set-ItemProperty'
            - 'New-ItemProperty'
            - ' add '
    selection_key:
        CommandLine|contains:
            - 'IsPplAutoEnabled'
            - 'RunAsPPL'
            - 'RunAsPPLBoot'
    condition: all of selection_*
falsepositives:
    - Unknown
level: medium