Guest User Invited By Non Approved Inviters

Detects when a user that doesn't have permissions to invite a guest user attempts to invite one.

Sigma rule (View on GitHub)

 1title: Guest User Invited By Non Approved Inviters
 2id: 0b4b72e3-4c53-4d5b-b198-2c58cfef39a9
 3status: test
 4description: Detects when a user that doesn't have permissions to invite a guest user attempts to invite one.
 5references:
 6    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-privileged-accounts#things-to-monitor
 7author: Mark Morowczynski '@markmorow', Yochana Henderson, '@Yochana-H'
 8date: 2022/08/10
 9tags:
10    - attack.persistence
11    - attack.defense_evasion
12    - attack.t1078.004
13logsource:
14    product: azure
15    service: auditlogs
16detection:
17    selection:
18        properties.message: Invite external user
19        Status: failure
20    condition: selection
21falsepositives:
22    - A non malicious user is unaware of the proper process
23level: medium

References

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