sigmahighHunting

Invoke-Obfuscation Via Use Rundll32 - System

Detects Obfuscated Powershell via use Rundll32 in Scripts

MITRE ATT&CK

defense-evasionexecution

Detection Query

selection:
  Provider_Name: Service Control Manager
  EventID: 7045
  ImagePath|contains|all:
    - "&&"
    - rundll32
    - shell32.dll
    - shellexec_rundll
  ImagePath|contains:
    - value
    - invoke
    - comspec
    - iex
condition: selection

Author

Nikita Nazarov, oscd.community

Created

2020-10-09

Data Sources

windowssystem

Platforms

windows

References

https://github.com/SigmaHQ/sigma/issues/1009

Tags

attack.defense-evasionattack.t1027attack.executionattack.t1059.001

Raw Content

title: Invoke-Obfuscation Via Use Rundll32 - System
id: 641a4bfb-c017-44f7-800c-2aee0184ce9b
status: test
description: Detects Obfuscated Powershell via use Rundll32 in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task30)
author: Nikita Nazarov, oscd.community
date: 2020-10-09
modified: 2022-11-29
tags:
    - attack.defense-evasion
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    service: system
detection:
    selection:
        Provider_Name: 'Service Control Manager'
        EventID: 7045
        ImagePath|contains|all:
            - '&&'
            - 'rundll32'
            - 'shell32.dll'
            - 'shellexec_rundll'
        ImagePath|contains:
            - 'value'
            - 'invoke'
            - 'comspec'
            - 'iex'
    condition: selection
falsepositives:
    - Unknown
level: high