Microsoft 365 - Impossible Travel Activity

Detects when a Microsoft Cloud App Security reported a risky sign-in attempt due to a login associated with an impossible travel.

Sigma rule (View on GitHub)

 1title: Microsoft 365 - Impossible Travel Activity
 2id: d7eab125-5f94-43df-8710-795b80fa1189
 3status: test
 4description: Detects when a Microsoft Cloud App Security reported a risky sign-in attempt due to a login associated with an impossible travel.
 5references:
 6    - https://learn.microsoft.com/en-us/defender-cloud-apps/anomaly-detection-policy
 7    - https://learn.microsoft.com/en-us/defender-cloud-apps/policy-template-reference
 8author: Austin Songer @austinsonger
 9date: 2020-07-06
10modified: 2021-11-27
11tags:
12    - attack.privilege-escalation
13    - attack.persistence
14    - attack.defense-evasion
15    - attack.initial-access
16    - attack.t1078
17logsource:
18    service: threat_management
19    product: m365
20detection:
21    selection:
22        eventSource: SecurityComplianceCenter
23        eventName: 'Impossible travel activity'
24        status: success
25    condition: selection
26falsepositives:
27    - Unknown
28level: medium

References

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