Possible Persistence Through Scrobj.dll COM Hijacking (via registry_set)

title: Possible Persistence Through Scrobj.dll COM Hijacking (via registry_set)
id: 48bbc300-c72e-5c13-8a3b-12dfd322be6d
status: stable
description: This rule detects use of scrobj.dll as this DLL looks for the ScriptletURL key to get the location of the script to execute
references:
    - https://attack.mitre.org/techniques/T1546/015/
    - https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1546.015/T1546.015.md
author: Huntrule Team
date: 2026-05-31
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.t1546.015
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|endswith: 'InprocServer32\(Default)'
        Details: 'C:\WINDOWS\system32\scrobj.dll'
    condition: selection
falsepositives:
    - Unknown
level: medium