SigmaHQ/rules/cloud/m365/microsoft365_potential_ransomware_activity.yml

25 lines
806 B
YAML

title: Microsoft 365 - Potential Ransomware Activity
id: bd132164-884a-48f1-aa2d-c6d646b04c69
status: experimental
description: Detects when a Microsoft Cloud App Security reported when a user uploads files to the cloud that might be infected with ransomware.
author: austinsonger
date: 2021/08/19
references:
- https://docs.microsoft.com/en-us/cloud-app-security/anomaly-detection-policy
- https://docs.microsoft.com/en-us/cloud-app-security/policy-template-reference
logsource:
category: ThreatManagement
service: Microsoft365
detection:
selection:
eventSource: SecurityComplianceCenter
eventName: "Potential ransomware activity"
status: success
condition: selection
falsepositives:
- Unknown
level: medium
tags:
- attack.impact
- attack.t1486