Skip to content

Catalogue
ATT&CK

Sign in Get started

Detection catalogue

Explore published rules with transparent provenance, licensing, and ATT&CK mappings.

detections

Search detections

Filters

Loading detections…

Loading detections

The public catalogue of detection rules. Every entry carries its source, the identifier it had there, its licence and its ATT&CK mapping.

Product

Catalogue ATT&CK Create a workspace

Trust

Security Privacy Licences Terms

Contact

Report a vulnerability Report a content issue contacto@sunturai.com

© 2026 Sunturai.

MediumΣSigmaHQ

Windows AppX Deployment Unsigned Package Installation

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

ATT&CK coverage

Outside the enterprise matrix

T1204.002
T1553.005

Detection requirements

Log source product: windows
Log source service: appxdeployment_server

What the source says

What fires this without an attack behind it

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

References

https://docs.microsoft.com/en-us/powershell/module/appx/add-appxpackage
https://www.splunk.com/en_us/blog/security/msix-weaponization-threat-detection-splunk.html

Tagged by the source as

attack.defense-impairmentattack.execution

Detection logic

Published to signed-in readers

The query as its source wrote it, its canonical form, and the content hash that pins this exact revision.

Sign in to read it Create an account

Provenance

Where this detection came from, and what you may do with it.

At source: Open at source
Written by: Michael Haag
Swachchhanda Shrawan Poudel (Nextron Systems)
Licence: Detection Rule License 1.1Read the licence
Published: Aug 26, 2026
Version: 1

See also

3,144 from SigmaHQ 3,618 rated medium