Non-owner mailbox login activity

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Finds non-owner mailbox access by admin/delegate permissions. Whitelist valid users and check others for unauthorized access.

Attribute Value
Type Hunting Query
Solution Microsoft 365
ID 0a8f410d-38b5-4d75-90da-32b472b97230
Tactics Collection, Exfiltration
Techniques T1114, T1020
Required Connectors Office365
Source View on GitHub

Tables Used

This content item queries data from the following tables:

Table Selection Criteria Transformations Ingestion API Lake-Only
OfficeActivity OfficeWorkload == "Exchange" ?

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