Detection rules › Sigma
Changes to Device Registration Policy
Monitor and alert for changes to the device registration policy.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Privilege Escalation | |
| Defense Impairment |
Telemetry coverage
| Platform | Record / event type |
|---|---|
| Azure | Set device registration policies |
Rules detecting the same action
These rules filter on the same operation.
- Azure MFA Disabled (Panther)
- Azure Policy Violation Detected (Panther)
- CA Policy Removed by Non Approved Actor (Sigma)
- CA Policy Updated by Non Approved Actor (Sigma)
- Certificate-Based Authentication Enabled (Sigma)
- Conditional Access - A Conditional Access app exclusion has changed (Kusto)
- Conditional Access - A Conditional Access Device platforms condition has changed (the Device platforms condition can be spoofed) (Kusto)
- Conditional Access - A Conditional Access policy was deleted (Kusto)
Rule body
title: Changes to Device Registration Policy
id: 9494bff8-959f-4440-bbce-fb87a208d517
status: test
description: Monitor and alert for changes to the device registration policy.
references:
- https://learn.microsoft.com/en-us/entra/architecture/security-operations-devices#device-registrations-and-joins-outside-policy
author: Michael Epping, '@mepples21'
date: 2022-06-28
tags:
- attack.privilege-escalation
- attack.defense-impairment
- attack.t1484
logsource:
product: azure
service: auditlogs
detection:
selection:
Category: 'Policy'
ActivityDisplayName: 'Set device registration policies'
condition: selection
falsepositives:
- Unknown
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
Category: 'Policy'
ActivityDisplayName: 'Set device registration policies'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
ActivityDisplayName | eq |
| field:"azure_ad::activity_display_name" kind:eq value:"Set device registration policies" |
Category | eq |
| field:"Category" kind:eq value:"Policy" |