HackTool - RedMimicry Winnti Playbook Execution — Sigma Rule

Rule metadata and linked tags

Author: Alexander Rausch. Source status: test; severity: high. Source dates: 2020-06-24 / 2023-03-01.

{
  "product": "windows",
  "category": "process_creation"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: d5a3582528277927ec6ea8d5ec805e110f2274c59bb825b84fe71a1f340d9d02

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: HackTool - RedMimicry Winnti Playbook Execution
id: 95022b85-ff2a-49fa-939a-d7b8f56eeb9b
status: test
description: Detects actions caused by the RedMimicry Winnti playbook a automated breach emulations utility
references:
    - https://redmimicry.com/posts/redmimicry-winnti/
author: Alexander Rausch
date: 2020-06-24
modified: 2023-03-01
tags:
    - attack.execution
    - attack.stealth
    - attack.t1106
    - attack.t1059.003
    - attack.t1218.011
logsource:
    product: windows
    category: process_creation
detection:
    selection:
        Image|endswith:
            - '\rundll32.exe'
            - '\cmd.exe'
        CommandLine|contains:
            - 'gthread-3.6.dll'
            - '\Windows\Temp\tmp.bat'
            - 'sigcmm-2.4.dll'
    condition: selection
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://redmimicry.com/posts/redmimicry-winnti/