Failed Authentications From Countries You Do Not Operate Out Of

Detect failed authentications from countries you do not operate out of.

Sigma rule (View on GitHub)

 1title: Failed Authentications From Countries You Do Not Operate Out Of
 2id: 28870ae4-6a13-4616-bd1a-235a7fad7458
 3status: test
 4description: Detect failed authentications from countries you do not operate out of.
 5references:
 6    - https://learn.microsoft.com/en-gb/entra/architecture/security-operations-user-accounts
 7author: MikeDuddington, '@dudders1'
 8date: 2022/07/28
 9tags:
10    - attack.initial_access
11    - attack.credential_access
12    - attack.t1078.004
13    - attack.t1110
14logsource:
15    product: azure
16    service: signinlogs
17detection:
18    selection:
19        Status: 'Success'
20    selection1:
21        Location|contains: '<Countries you DO operate out of e,g GB, use OR for multiple>'
22    condition: not selection and not selection1
23falsepositives:
24    - If this was approved by System Administrator.
25level: low

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