Sigma Rule Library

MMC Spawning Windows Shell

Detects a Windows command line executable started from MMC

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Detection logic

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*

Raw YAML

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

False positives

No false positives documented in this rule.

References

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