Suspicious Deployment AppX Package Was Blocked By AppLocker (via appxdeployment-server)

This rule detects an appx package deployment that was blocked by AppLocker policy.

SigmamediumWindowsv1

sigma

suspicious-deployment-appx-package-was-blocked-by-applocker-via-appxdeployment-server

title: Suspicious Deployment AppX Package Was Blocked By AppLocker (via appxdeployment-server)
id: 52b87458-5f8c-5e33-8ee2-ea7792bc229e
status: stable
description: This rule detects an appx package deployment that was blocked by AppLocker policy.
references:
    - https://learn.microsoft.com/en-us/windows/win32/appxpkg/troubleshooting
    - https://github.com/nasbench/EVTX-ETW-Resources/blob/7a806a148b3d9d381193d4a80356016e6e8b1ee8/ETWEventsList/CSV/Windows11/22H2/W11_22H2_Pro_20220920_22621.382/Providers/Microsoft-Windows-AppXDeployment-Server.csv
author: Huntrule Team
date: 2026-04-24
tags:
    - attack.stealth
logsource:
    product: windows
    service: appxdeployment-server
detection:
    selection:
        EventID: 412
    condition: selection
falsepositives:
    - Unknown
level: medium

Known false positives

Unknown

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.