Azure Unusual Authentication Interruption

 1title: Azure Unusual Authentication Interruption
 2id: 8366030e-7216-476b-9927-271d79f13cf3
 3status: test
 4description: Detects when there is a interruption in the authentication process.
 5references:
 6    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-privileged-accounts
 7author: Austin Songer @austinsonger
 8date: 2021-11-26
 9modified: 2022-12-18
10tags:
11    - attack.privilege-escalation
12    - attack.persistence
13    - attack.defense-evasion
14    - attack.initial-access
15    - attack.t1078
16logsource:
17    product: azure
18    service: signinlogs
19detection:
20    selection_50097:
21        ResultType: 50097
22        ResultDescription: 'Device authentication is required'
23    selection_50155:
24        ResultType: 50155
25        ResultDescription: 'DeviceAuthenticationFailed'
26    selection_50158:
27        ResultType: 50158
28        ResultDescription: 'ExternalSecurityChallenge - External security challenge was not satisfied'
29    condition: 1 of selection_*
30falsepositives:
31    - Unknown
32level: medium