Detection rules › Sigma
CA Policy Removed by Non Approved Actor
Monitor and alert on conditional access changes where non approved actor removed CA Policy.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | T1556 Modify Authentication Process |
| Privilege Escalation | T1548 Abuse Elevation Control Mechanism |
| Defense Impairment | T1556 Modify Authentication Process |
| Credential Access | T1556 Modify Authentication Process |
Rule body yaml
title: CA Policy Removed by Non Approved Actor
id: 26e7c5e2-6545-481e-b7e6-050143459635
status: test
description: Monitor and alert on conditional access changes where non approved actor removed CA Policy.
references:
- https://learn.microsoft.com/en-us/entra/architecture/security-operations-infrastructure#conditional-access
author: Corissa Koopmans, '@corissalea'
date: 2022-07-19
tags:
- attack.privilege-escalation
- attack.credential-access
- attack.persistence
- attack.defense-impairment
- attack.t1548
- attack.t1556
logsource:
product: azure
service: auditlogs
detection:
selection:
properties.message: Delete conditional access policy
condition: selection
falsepositives:
- Misconfigured role permissions
- Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.
level: medium
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
properties.message: Delete conditional access policy
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
properties.message | eq |
|