Windows AppX Deployment Unsigned Package Installation

Detects attempts to install unsigned MSIX/AppX packages using the -AllowUnsigned parameter via AppXDeployment-Server events

Detection logic

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

Legitimate installation of unsigned packages for legitimate purposes such as development or testing

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
docs.microsoft.com/en-us/powershell/module/appx/add-appxpackage	Product documentation	Only this detection cites it
www.splunk.com/en_us/blog/security/msix-weaponization-threat-detection-splunk.html	Security research	3