Microsoft 365 - Potential Ransomware Activity

Title: Microsoft 365 - Potential Ransomware Activity
Status: test
Description:Detects when a Microsoft Cloud App Security reported when a user uploads files to the cloud that might be infected with ransomware.
References:
  -https://learn.microsoft.com/en-us/defender-cloud-apps/anomaly-detection-policy
  -https://learn.microsoft.com/en-us/defender-cloud-apps/policy-template-reference
Author: austinsonger
Date: 2021-08-19
modified:2022-10-09
Tags:

• -'attack.impact'
• -'attack.t1486'

Logsource:

• service: threat_management
• product: m365

Detection:
  selection:
    eventSource: 'SecurityComplianceCenter'
    eventName: 'Potential ransomware activity'
    status: 'success'
  condition:selection
Falsepositives:
  -Unknown
Level: medium