Microsoft 365 - Potential Ransomware Activity
Detects when a Microsoft Cloud App Security reported when a user uploads files to the cloud that might be infected with ransomware.
Sigma rule (View on GitHub)
1title: Microsoft 365 - Potential Ransomware Activity
2id: bd132164-884a-48f1-aa2d-c6d646b04c69
3status: test
4description: Detects when a Microsoft Cloud App Security reported when a user uploads files to the cloud that might be infected with ransomware.
5references:
6 - https://docs.microsoft.com/en-us/cloud-app-security/anomaly-detection-policy
7 - https://docs.microsoft.com/en-us/cloud-app-security/policy-template-reference
8author: austinsonger
9date: 2021/08/19
10modified: 2022/10/09
11tags:
12 - attack.impact
13 - attack.t1486
14logsource:
15 service: threat_management
16 product: m365
17detection:
18 selection:
19 eventSource: SecurityComplianceCenter
20 eventName: 'Potential ransomware activity'
21 status: success
22 condition: selection
23falsepositives:
24 - Unknown
25level: medium
References
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