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Device Registration or Join Without MFA

Monitor and alert for device registration or join events where MFA was not performed.

MITRE ATT&CK

privilege-escalationpersistenceinitial-accessdefense-evasion

Detection Query

selection:
  ResourceDisplayName: Device Registration Service
  conditionalAccessStatus: success
filter_mfa:
  AuthenticationRequirement: multiFactorAuthentication
condition: selection and not filter_mfa

Author

Michael Epping, '@mepples21'

Created

2022-06-28

Data Sources

azuresigninlogs

Platforms

azure

References

https://learn.microsoft.com/en-us/entra/architecture/security-operations-devices#device-registrations-and-joins-outside-policy

Tags

attack.privilege-escalationattack.persistenceattack.initial-accessattack.defense-evasionattack.t1078.004

Raw Content

title: Device Registration or Join Without MFA
id: 5afa454e-030c-4ab4-9253-a90aa7fcc581
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
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.initial-access
    - attack.defense-evasion
    - 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