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https://www.elastic.co/guide/en/security/current/detection-engine-overview.html
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[Rule Tuning] O365 Exchange Suspicious Mailbox Right Delegation #3446

Open BCall-BT opened 8 months ago

BCall-BT commented 8 months ago

## Link to rule

Description

Typo in the filter used to exclude "NT AUTHORITY\SYSTEM" from the alerts due to it being case-sensitive.

Current query has "not user.id : "NT AUTHORITY\SYSTEM (Microsoft.Exchange.Servicehost)". However, the log data coming in from Microsoft has a capital "H" in servicehost. The filter should be not user.id : "NT AUTHORITY\SYSTEM (Microsoft.Exchange.ServiceHost)"

Example Data

image

botelastic[bot] commented 6 months ago

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

botelastic[bot] commented 6 months ago

This has been closed due to inactivity. If you feel this is an error, please re-open and include a justifying comment.