splApache-2.0from splunk/security_content
O365 Exfiltration via File Access
The following analytic detects when an excessive number of files are access from o365 by the same user over a short period of time. A malicious actor may abuse the "open in app" functionality of SharePoint through scripted or Graph API based access to evade triggering the FileDownloaded Event. This behavior may indicate an attacker staging data for exfiltration or an insider threat removing organizational data. Additional attention should be take with any Azure Guest (#EXT#) accounts.
Quality
67
FP risk
—
Forks
0
Views
0
Rule source🔒 locked
🔒
Sign in to view the rule source
Free accounts can view the source for the top-ranked rules. Create one in seconds — no credit card required.
Sign in →