Suspicious Invoke-Obfuscation RUNDLL LAUNCHER - PowerShell Module (via ps_module)

title: Suspicious Invoke-Obfuscation RUNDLL LAUNCHER - PowerShell Module (via ps_module)
id: 7587beb4-818e-59e7-a26b-ab6ca3991d4b
status: stable
description: This rule detects Obfuscated Powershell via RUNDLL LAUNCHER
references:
    - https://attack.mitre.org/techniques/T1059/001/
    - https://attack.mitre.org/techniques/T1027/
    - https://github.com/SigmaHQ/sigma/issues/1009
author: Huntrule Team
date: 2026-01-08
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_module
    definition: 0ad03ef1-f21b-4a79-8ce8-e6900c54b65b
detection:
    selection_4103:
        Payload|contains|all:
            - 'rundll32.exe'
            - 'shell32.dll'
            - 'shellexec_rundll'
            - 'powershell'
    condition: selection_4103
falsepositives:
    - Unknown
level: medium