O365 SharePoint Scripted File Access via FileAccessed
Detects programmatic file access in Microsoft 365/SharePoint environments where the operation is logged as 'FileAccessed' but the UserAgent indicates a scripting library like python-requests or PowerShell. This behavior is indicative of data exfiltration techniques used by actors like UNC6671 (BlackFile) who stream file content directly to bypass traditional 'FileDownloaded' monitoring.
Sigma
