Verclsid.exe Runs COM Object — Sigma Rule

Rule metadata and linked tags

Author: Victor Sergeev, oscd.community. Source status: test; severity: medium. Source dates: 2020-10-09 / 2025-10-07.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 775a6462da57202e6a7b6227702165a10e87301b9bbcc4587f939fb86c10928a

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: Verclsid.exe Runs COM Object
id: d06be4b9-8045-428b-a567-740a26d9db25
status: test
description: Detects when verclsid.exe is used to run COM object via GUID
references:
    - https://lolbas-project.github.io/lolbas/Binaries/Verclsid/
    - https://gist.github.com/NickTyrer/0598b60112eaafe6d07789f7964290d5
    - https://bohops.com/2018/08/18/abusing-the-com-registry-structure-part-2-loading-techniques-for-evasion-and-persistence/
author: Victor Sergeev, oscd.community
date: 2020-10-09
modified: 2025-10-07
tags:
    - attack.stealth
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\verclsid.exe'
        - OriginalFileName: 'verclsid.exe'
    selection_cli:
        CommandLine|contains|all:
            - '/S'
            - '/C'
    filter_main_runtimebroker:
        ParentImage|endswith: 'C:\Windows\System32\RuntimeBroker.exe'
        CommandLine|contains|all:
            - 'verclsid.exe" /S /C {'
            - '} /I {'
    condition: all of selection_* and not 1 of filter_main_*
falsepositives:
    - Unknown
level: medium

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://lolbas-project.github.io/lolbas/Binaries/Verclsid/
• https://gist.github.com/NickTyrer/0598b60112eaafe6d07789f7964290d5
• https://bohops.com/2018/08/18/abusing-the-com-registry-structure-part-2-loading-techniques-for-evasion-and-persistence/