[Rule Tuning] O365 Exchange Suspicious Mailbox Right Delegation
BCall-BT opened this issue · comments
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
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