Microsoft Graph API DELETE Method Activity
This rule identifies when the HTTP DELETE method is used within the Microsoft Graph API. This can indicate administrative activities such as deleting users, groups, or other resources. The rule specifically looks for network HTTP events where the product event type is 'Microsoft Graph Activity' and the HTTP method is 'DELETE'. It excludes IP addresses within a specific Azure CIDR range (20.151.0.0/16) to reduce noise from internal Azure operations. Further tuning can be applied to target specific API endpoints or user agents.
YARA-L
