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O365_Multiple_Failed_MFA_Challenges

ID: 100268

Description:

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

Repository: Group: Office365 Type: event

Default Status:

Enabled

Tags:    
O365 M365 Office365
     

Selector:

Query:

Filters:

Field MUST hit
@fields.LogonError UserStrongAuthClientAuthNRequiredInterrupt
@fields.Workload AzureActiveDirectory
Field MUST NOT hit
@fields.ExtendedPropertiesFields.RequestType SAS:BeginAuth

Behavior Rule:

Key Type Behavior Category
@fields.UserId username account login

Risks:

Risks Base Score Dimension
Timeline 0 -

Attributes:

Alias Key
Username @fields.UserId
IP @fields.ClientIP
City @fields._ip.city
Country @fields._ip.country
ISP @fields._ip.isp

Correlation Rules:

Aggregation:

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

History:

User Date
2021 May 20 03:08:04 EDT
em*n@fluencysecurity.com 2021 Jun 1 22:09:32 EDT
em*n@fluencysecurity.com 2021 Jun 1 22:12:52 EDT
ho*d@fluencysecurity.com 2021 Jun 15 09:47:28 EDT

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