Azure AD Account Credential Leaked

Indicates that the user's valid credentials have been leaked.

Sigma rule (View on GitHub)

 1title: Azure AD Account Credential Leaked
 2id: 19128e5e-4743-48dc-bd97-52e5775af817
 3status: test
 4description: Indicates that the user's valid credentials have been leaked.
 5references:
 6    - https://learn.microsoft.com/en-us/entra/id-protection/concept-identity-protection-risks#leaked-credentials
 7    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-user-accounts#unusual-sign-ins
 8author: Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo'
 9date: 2023/09/03
10tags:
11    - attack.t1589
12    - attack.reconnaissance
13logsource:
14    product: azure
15    service: riskdetection
16detection:
17    selection:
18        riskEventType: 'leakedCredentials'
19    condition: selection
20falsepositives:
21    - A rare hash collision.
22level: high

References

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