Suspicious Digital Signature Of AppX Package (via appxpackaging-om)
This rule detects execution of AppX packages with known anomalous or hostile signature
SigmamediumWindowsv1
sigma
suspicious-digital-signature-of-appx-package-via-appxpackaging-om
title: Suspicious Digital Signature Of AppX Package (via appxpackaging-om)
id: 87eb2719-678e-515f-a44e-e7ed030c6734
status: stable
description: This rule detects execution of AppX packages with known anomalous or hostile signature
references:
- Internal Research
- https://www.sentinelone.com/labs/inside-malicious-windows-apps-for-malware-deployment/
author: Huntrule Team
date: 2026-04-24
tags:
- attack.execution
- attack.stealth
- attack.defense-evasion
- attack.t1553.002
- attack.t1204.002
logsource:
product: windows
service: appxpackaging-om
detection:
selection:
EventID: 157
subjectName: 'CN=Foresee Consulting Inc., O=Foresee Consulting Inc., L=North York, S=Ontario, C=CA, SERIALNUMBER=1004913-1, OID.1.3.6.1.4.1.311.60.2.1.3=CA, OID.2.5.4.15=Private Organization'
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.