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.
Sigma rule (View on GitHub)
1title: Suspicious OAuth App File Download Activities
2id: ee111937-1fe7-40f0-962a-0eb44d57d174
3status: test
4description: 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.
5references:
6 - https://learn.microsoft.com/en-us/defender-cloud-apps/anomaly-detection-policy
7 - https://learn.microsoft.com/en-us/defender-cloud-apps/policy-template-reference
8author: Austin Songer @austinsonger
9date: 2021-08-23
10modified: 2022-10-09
11tags:
12 - attack.exfiltration
13logsource:
14 service: threat_management
15 product: m365
16detection:
17 selection:
18 eventSource: SecurityComplianceCenter
19 eventName: 'Suspicious OAuth app file download activities'
20 status: success
21 condition: selection
22falsepositives:
23 - Unknown
24level: medium
References
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