Anomaly of MailItemAccess by Other Users Mailbox [Nobelium]

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This query looks for users accessing multiple other users' mailboxes, or accessing multiple folders in another user's mailbox. This query is inspired by an Azure Sentinel detection. Reference - https://github.com/Azure/Azure-Sentinel/blob/master/Hunting%20Queries/OfficeActivity/AnomolousUserAccessingOtherUsersMailbox.yaml

Attribute Value
Type Hunting Query
Solution GitHub Only
ID 6a927d9a-66c3-4491-815d-a31d4bbb2948
Tactics Collection
Required Connectors MicrosoftThreatProtection
Source View on GitHub

Tables Used

This content item queries data from the following tables:

Table Selection Criteria Transformations Ingestion API Lake-Only
CloudAppEvents ActionType == "MailItemsAccessed" ?

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