Sigma rule: Potential Persistence Via Scrobj.dll COM Hijacking

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-d78d15c375a5, updated 2023-08-17T00:00:00.000Z.

Rule

Title
Potential Persistence Via Scrobj.dll COM Hijacking
Status
test
Level
medium
Author
frack113
Date
2022-08-20
Modified
2023-08-17
File
rules/windows/registry/registry_set/registry_set_persistence_scrobj_dll.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detect use of scrobj.dll as this DLL looks for the ScriptletURL key to get the location of the script to execute

Log source

product
windows
category
registry_set

Detection

selection:
    TargetObject|endswith: 'InprocServer32\(Default)'
    Details: 'C:\WINDOWS\system32\scrobj.dll'
condition: selection

False positives (as the rule lists them)

  • Legitimate use of the dll.

Tags

  • attack.privilege-escalation
  • attack.persistence
  • attack.t1546.015

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/registry/registry_set/registry_set_persistence_scrobj_dll.yml

Sources and licences

  • SigmaHQ

    "Potential Persistence Via Scrobj.dll COM Hijacking" by frack113 (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/registry/registry_set/registry_set_persistence_scrobj_dll.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Potential Persistence Via Scrobj.dll COM Hijacking",
entity page, dataset version ref-d78d15c375a5, updated 2023-08-17T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/fe20dda1-6f37-4379-bbe0-a98d400cae90 (accessed 2026-11-03).
Underlying source: SigmaHQ rule fe20dda1-6f37-4379-bbe0-a98d400cae90, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.