Application AppID Uri Configuration Changes — Sigma Rule

Rule metadata and linked tags

Author: Mark Morowczynski '@markmorow', Bailey Bercik '@baileybercik'. Source status: test; severity: high. Source dates: 2022-06-02 / not supplied.

{
  "product": "azure",
  "service": "auditlogs"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: f9d5cd274d6519308a295504ebe6c744d83a76b9976124e2ab79ea1ceb80dd13

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Application AppID Uri Configuration Changes
id: 1b45b0d1-773f-4f23-aedc-814b759563b1
status: test
description: Detects when a configuration change is made to an applications AppID URI.
references:
    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-applications#appid-uri-added-modified-or-removed
author: Mark Morowczynski '@markmorow', Bailey Bercik '@baileybercik'
date: 2022-06-02
tags:
    - attack.initial-access
    - attack.persistence
    - attack.credential-access
    - attack.privilege-escalation
    - attack.stealth
    - attack.t1552
    - attack.t1078.004
logsource:
    product: azure
    service: auditlogs
detection:
    selection:
        properties.message:
            - Update Application
            - Update Service principal
    condition: selection
falsepositives:
    - When and administrator is making legitimate AppID URI configuration changes to an application. This should be a planned event.
level: high

Original YAML and metadata in JSON

False positives

• When and administrator is making legitimate AppID URI configuration changes to an application. This should be a planned event.

Source references

• https://learn.microsoft.com/en-us/entra/architecture/security-operations-applications#appid-uri-added-modified-or-removed