Malicious BEC Inbox Rule

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'Often times after the initial compromise in a BEC attack the attackers create inbox rules to delete emails that contain certain keywords related to their BEC attack. This is done so as to limit ability to warn compromised users that they've been compromised.

Attribute Value
Type Analytic Rule
Solution Business Email Compromise - Financial Fraud
ID 8ac77493-3cae-4840-8634-15fb23f8fb68
Severity Medium
Kind Scheduled
Tactics Persistence, DefenseEvasion
Techniques T1098, T1078
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 Operation == "New-InboxRule"
Parameters has "DeleteMessage"
Parameters has "Deleted Items"
Parameters has "Junk Email"

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