sigmaDRL-1.1from SigmaHQ/sigma

Invoke-Obfuscation Via Use Rundll32 - PowerShell Module

Detects Obfuscated Powershell via use Rundll32 in Scripts

Quality

100

FP risk

—

Forks

Views

ATT&CK techniques

T1027 T1059.001

Rule sourcerules/windows/powershell/powershell_module/posh_pm_invoke_obfuscation_via_use_rundll32.yml

title: Invoke-Obfuscation Via Use Rundll32 - PowerShell Module
id: 88a22f69-62f9-4b8a-aa00-6b0212f2f05a
related:
    - id: a5a30a6e-75ca-4233-8b8c-42e0f2037d3b
      type: derived
status: test
description: Detects Obfuscated Powershell via use Rundll32 in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009
author: Nikita Nazarov, oscd.community
date: 2019-10-08
modified: 2022-11-29
tags:
    - attack.defense-evasion
    - 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'
            - 'shell32.dll'
            - 'shellexec_rundll'
        Payload|contains:
            - 'value'
            - 'invoke'
            - 'comspec'
            - 'iex'
    condition: selection_4103
falsepositives:
    - Unknown
level: high