Device Registration or Join Without MFA

Title: Device Registration or Join Without MFA
Status: test
Description:Monitor and alert for device registration or join events where MFA was not performed.
References:
  -https://learn.microsoft.com/en-us/entra/architecture/security-operations-devices#device-registrations-and-joins-outside-policy
Author: Michael Epping, '@mepples21'
Date: 2022-06-28
modified:None
Tags:

• -'attack.privilege-escalation'
• -'attack.persistence'
• -'attack.initial-access'
• -'attack.stealth'
• -'attack.t1078.004'

Logsource:

• product: azure
• service: signinlogs

Detection:
  selection:
    ResourceDisplayName: 'Device Registration Service'
    conditionalAccessStatus: 'success'
  filter_mfa:
    AuthenticationRequirement: 'multiFactorAuthentication'
  condition:selection and not filter_mfa
Falsepositives:
  -Unknown
Level: medium