sigmamediumHunting

Verclsid.exe Runs COM Object

Detects when verclsid.exe is used to run COM object via GUID

MITRE ATT&CK

Detection Query

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_*

Author

Victor Sergeev, oscd.community

Created

2020-10-09

Data Sources

windowsProcess Creation Events

Platforms

windows

References

Tags

attack.stealthattack.t1218

Raw Content

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