Sigma rule: Suspicious Digital Signature Of AppX Package

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-aeb7d69883b2, updated 2023-01-16T00:00:00.000Z.

Rule

Title
Suspicious Digital Signature Of AppX Package
Status
test
Level
medium
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2023-01-16
File
rules/windows/builtin/appxpackaging_om/win_appxpackaging_om_sups_appx_signature.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects execution of AppX packages with known suspicious or malicious signature

Log source

product
windows
service
appxpackaging-om

Detection

selection:
    EventID: 157
    # Add more known suspicious/malicious certificates used in different attacks
    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

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.execution
  • attack.stealth

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/builtin/appxpackaging_om/win_appxpackaging_om_sups_appx_signature.yml

Sources and licences

  • SigmaHQ

    "Suspicious Digital Signature Of AppX Package" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/builtin/appxpackaging_om/win_appxpackaging_om_sups_appx_signature.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Suspicious Digital Signature Of AppX Package",
entity page, dataset version ref-aeb7d69883b2, updated 2023-01-16T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/b5aa7d60-c17e-4538-97de-09029d6cd76b (accessed 2026-11-03).
Underlying source: SigmaHQ rule b5aa7d60-c17e-4538-97de-09029d6cd76b, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.