Suspicious Verclsid.exe Runs COM Object (via process_creation)

title: Suspicious Verclsid.exe Runs COM Object (via process_creation)
id: 61c5d5e4-c453-506d-9755-2aab637d774a
status: stable
description: This rule detects when verclsid.exe is leveraged to run COM object via GUID
references:
    - https://attack.mitre.org/techniques/T1218/
    - 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: Huntrule Team
date: 2026-06-11
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 {'
    filter_hr:
        ParentImage: C:\Windows\explorer.exe
    condition: (all of selection_* and not 1 of filter_main_*) and not filter_hr
falsepositives:
    - Unknown
level: medium