MMC Spawning Windows Shell — Sigma Rule

Rule metadata and linked tags

Author: Karneades, Swisscom CSIRT. Source status: test; severity: high. Source dates: 2019-08-05 / 2022-07-14.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: b2aa759a85c32558617e8aaaf699023ea3bff776f8efee4f18dc1b60f5a4b5f5

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: MMC Spawning Windows Shell
id: 05a2ab7e-ce11-4b63-86db-ab32e763e11d
status: test
description: Detects a Windows command line executable started from MMC
references:
    - https://enigma0x3.net/2017/01/05/lateral-movement-using-the-mmc20-application-com-object/
author: Karneades, Swisscom CSIRT
date: 2019-08-05
modified: 2022-07-14
tags:
    - attack.lateral-movement
    - attack.t1021.003
logsource:
    category: process_creation
    product: windows
detection:
    selection1:
        ParentImage|endswith: '\mmc.exe'
    selection2:
        - Image|endswith:
              - '\cmd.exe'
              - '\powershell.exe'
              - '\pwsh.exe'
              - '\wscript.exe'
              - '\cscript.exe'
              - '\sh.exe'
              - '\bash.exe'
              - '\reg.exe'
              - '\regsvr32.exe'
        - Image|contains: '\BITSADMIN'
    condition: all of selection*
level: high

Original YAML and metadata in JSON

False positives

No reviewed association in this snapshot.

Source references

• https://enigma0x3.net/2017/01/05/lateral-movement-using-the-mmc20-application-com-object/