MediumSigmaHQ Michael Haag +1

Windows AppX Deployment Full Trust Package Installation

Detects the installation of MSIX/AppX packages with full trust privileges which run with elevated privileges outside normal AppX container restrictions

Detection logic

Detection requirements

Platform: Linux macOS Windows
The rule states no platform. This is derived from the 2 ATT&CK techniques it maps to.
Log source product: windows
Log source service: appxdeployment_server

Known benign triggers

Some legitimate applications installation which have been missed from filtering can generate fps, thus baselining and tuning is recommended before deploying to production

References

Links the source published beside this detection. Reference is the link the source wrote, unmodified. Class is decided by this catalogue from the host and path, not stated by the source. Cited by counts published detections citing the same resource, including this one, and the sources beneath it count the repositories this catalogue ingests, which is not the same as independent research.
Reference	Class	Cited by
www.splunk.com/en_us/blog/security/msix-weaponization-threat-detection-splunk.html	Security research	3

Detection rules

Windows AppX Deployment Full Trust Package Installation

Detection logic

Detection requirements

Known benign triggers

MITRE ATT&CK mappings

References

From the source

Licence

Authorship

Detection rules