Detectionmediumtest

Suspicious OAuth App File Download Activities

Detects when a Microsoft Cloud App Security reported when an app downloads multiple files from Microsoft SharePoint or Microsoft OneDrive in a manner that is unusual for the user.

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Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.

Launch

Austin SongerCreated Mon Aug 23Updated Sun Oct 09ee111937-1fe7-40f0-962a-0eb44d57d174cloud

Log Source

Microsoft 365threat_management

ProductMicrosoft 365← raw: m365

Servicethreat_management← raw: threat_management

Detection Logic

detection:
    selection:
        eventSource: SecurityComplianceCenter
        eventName: 'Suspicious OAuth app file download activities'
        status: success
    condition: selection

False Positives

Unknown

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

References

MITRE ATT&CK

Tactics

TA0010 · Exfiltration

Rule Metadata