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Office Application Startup - Office Test — Sigma Rule

Sigma rule 3d27f6dd-1c74-4687-b4fa-ca849d128d1c. Office Application Startup - Office Test — Sigma Rule. Detects the addition of office test registry that allows a user to specify an arbitrary DLL that will be executed every time an Office application is started

Rule metadata and linked tags

testmediumregistry_eventwindowsattack.persistenceattack.t1137.002

Author: omkar72. Source status: test; severity: medium. Source dates: 2020-10-25 / 2023-11-08.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 683973beafdb1a583839f69bad2f597d3a0431ce2b8e43060a97bc1bc4f65716

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: Office Application Startup - Office Test
id: 3d27f6dd-1c74-4687-b4fa-ca849d128d1c
status: test
description: Detects the addition of office test registry that allows a user to specify an arbitrary DLL that will be executed every time an Office application is started
references:
    - https://unit42.paloaltonetworks.com/unit42-technical-walkthrough-office-test-persistence-method-used-in-recent-sofacy-attacks/
author: omkar72
date: 2020-10-25
modified: 2023-11-08
tags:
    - attack.persistence
    - attack.t1137.002
logsource:
    category: registry_event
    product: windows
detection:
    selection:
        TargetObject|contains: '\Software\Microsoft\Office test\Special\Perf'
    condition: selection
falsepositives:
    - Unlikely
level: medium

Original YAML and metadata in JSON

False positives

  • Unlikely

Source references

Connected ecosystem references

Exact source-tagged techniques

Telemetry review

Read the original logsource above, then inspect the linked detection workspaces for technique-level sensor context. No per-rule telemetry equivalence is inferred.

Pinned research references. No browser attack runner, live simulation result or validated detector is asserted. Source mappings and validation limits are preserved. ATT&CK / Atomic provenance · Detection provenance.