Possible New Application in AppCompat (via registry_set)

title: Possible New Application in AppCompat (via registry_set)
id: d6f1e495-e4b6-5a1e-ada8-f840872e3a15
status: stable
description: This rule detects a General detection for a new application in AppCompat. This suggests an application running for the first time on an endpoint.
references:
    - https://attack.mitre.org/techniques/T1204/002/
    - https://github.com/OTRF/detection-hackathon-apt29/issues/1
    - https://github.com/OTRF/ThreatHunter-Playbook/blob/2d4257f630f4c9770f78d0c1df059f891ffc3fec/docs/evals/apt29/detections/1.A.1_DFD6A782-9BDB-4550-AB6B-525E825B095E.md
author: Huntrule Team
date: 2026-03-15
tags:
    - attack.execution
    - attack.t1204.002
logsource:
    product: windows
    category: registry_set
detection:
    selection:
        TargetObject|contains: '\AppCompatFlags\Compatibility Assistant\Store\'
    condition: selection
falsepositives:
    - Unknown
level: informational