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Detectionmediumtest

Microsoft 365 - Unusual Volume of File Deletion

Detects when a Microsoft Cloud App Security reported a user has deleted a unusual a large volume of files.

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Austin SongerCreated Thu Aug 19Updated Sun Oct 0978a34b67-3c39-4886-8fb4-61c46dc18ecdcloud
Log Source
Microsoft 365threat_management
ProductMicrosoft 365← raw: m365
Servicethreat_management← raw: threat_management
Detection Logic
Detection Logic1 selector
detection:
    selection:
        eventSource: SecurityComplianceCenter
        eventName: 'Unusual volume of file deletion'
        status: success
    condition: selection
False Positives
Unknown

False positive likelihood has not been assessed. Additional context may be needed during triage.

References
1
Resolving title…
learn.microsoft.com
2
Resolving title…
learn.microsoft.com
MITRE ATT&CK
Rule Metadata
Rule ID
78a34b67-3c39-4886-8fb4-61c46dc18ecd
Status
test
Level
medium
Type
Detection
Created
Thu Aug 19
Modified
Sun Oct 09
Author
Austin Songer
Path
rules/cloud/m365/threat_management/microsoft365_unusual_volume_of_file_deletion.yml
Raw Tags
attack.impactattack.t1485
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