New CA Policy by Non-approved Actor

calendar Oct 23, 2025 · attack.privilege-escalation attack.defense-evasion attack.t1548  ·
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Monitor and alert on conditional access changes.

Sigma rule (View on GitHub)

 1title: New CA Policy by Non-approved Actor
 2id: 0922467f-db53-4348-b7bf-dee8d0d348c6
 3status: test
 4description: Monitor and alert on conditional access changes.
 5references:
 6    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-infrastructure
 7author: Corissa Koopmans, '@corissalea'
 8date: 2022-07-18
 9tags:
10    - attack.privilege-escalation
11    - attack.defense-evasion
12    - attack.t1548
13logsource:
14    product: azure
15    service: auditlogs
16detection:
17    selection:
18        properties.message: Add conditional access policy
19    condition: selection
20falsepositives:
21    - Misconfigured role permissions
22    - Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.
23level: medium

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