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O365_Multiple_Failed_MFA_Challenges

ID: 100406

Description:

A user was unable to login due to multiple failed MFA challenges

Repository: Group: Office365ES Type: event

Default Status:

Enabled

Tags:    
O365 M365 Office365
     

Selector:

Query:

Filters:

Field MUST hit
o365.audit.LogonError UserStrongAuthClientAuthNRequiredInterrupt
o365.audit.Workload AzureActiveDirectory
Field MUST NOT hit
o365.audit.ExtendedPropertiesFields.RequestType SAS:BeginAuth

Behavior Rule:

Key Type Behavior Category
o365.audit.UserId username account login

Risks:

Risks Base Score Dimension
     

Attributes:

Alias Key
Username o365.audit.UserId
IP o365.audit.ClientIP
City _ip.city
Country _ip.country
ISP _ip.isp

Correlation Rules:

Aggregation:

Name Window Field AggType Match
FailedLogins 1 hour   count gt 10
  Risks: ALERT_POLICY    

History:

| User | Date | | :— | :— | | — | — |

This page was automatically created/formatted on Tue, 2021 Oct 19 00:29:17 EDT, from rule_dump.json (db47c470500ce8686ead334f5eda0596)