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blue-team-tools/rules/cloud/azure/azure_mfa_interrupted.yml
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frack113 646351808e Refractor (#3794)
Co-authored-by: Nasreddine Bencherchali <8741929+nasbench@users.noreply.github.com>
2022-12-18 21:00:14 +01:00

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YAML

title: Multifactor Authentication Interrupted
id: 5496ff55-42ec-4369-81cb-00f417029e25
status: experimental
description: Identifies user login with multifactor authentication failures, which might be an indication an attacker has the password for the account but can't pass the MFA challenge.
references:
- https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/security-operations-privileged-accounts
author: AlertIQ
date: 2021/10/10
modified: 2022/12/18
tags:
- attack.initial_access
- attack.t1078.004
logsource:
product: azure
service: signinlogs
detection:
selection_50074:
ResultType: 50074
ResultDescription|contains: 'Strong Auth required'
selection_500121:
ResultType: 500121
ResultDescription|contains: 'Authentication failed during strong authentication request'
condition: 1 of selection_*
falsepositives:
- Unknown
level: medium