Microsoft 365 - User Restricted from Sending Email
Detects when a Security Compliance Center reported a user who exceeded sending limits of the service policies and because of this has been restricted from sending email.
Sigma rule (View on GitHub)
1title: Microsoft 365 - User Restricted from Sending Email
2id: ff246f56-7f24-402a-baca-b86540e3925c
3status: test
4description: Detects when a Security Compliance Center reported a user who exceeded sending limits of the service policies and because of this has been restricted from sending email.
5references:
6 - https://learn.microsoft.com/en-us/defender-cloud-apps/anomaly-detection-policy
7 - https://learn.microsoft.com/en-us/defender-cloud-apps/policy-template-reference
8author: austinsonger
9date: 2021-08-19
10modified: 2022-10-09
11tags:
12 - attack.initial-access
13 - attack.t1199
14logsource:
15 service: threat_management
16 product: m365
17detection:
18 selection:
19 eventSource: SecurityComplianceCenter
20 eventName: 'User restricted from sending email'
21 status: success
22 condition: selection
23falsepositives:
24 - Unknown
25level: medium
References
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