Update detections/cloud/azure_ad_multiple_failed_mfa_requests_for_user.yml

This commit is contained in:
Gowthamaraj rajendran
2023-07-31 15:18:14 -07:00
parent 79935e6668
commit 4dbbfbaf7c
@@ -18,8 +18,8 @@ description: The following analytic identifies multiple failed multi-factor auth
this technique to bypass multi-factor authentication controls as reported by Mandiant
and others.
data_source: []
search: ' `azuread` body.category=SignInLogs body.properties.status.errorCode=500121
| rename body.properties.* as * | bucket span=10m _time | stats dc(_raw) AS mfa_prompts
search: ' `azuread` category=SignInLogs properties.status.errorCode=500121
| rename properties.* as * | bucket span=10m _time | stats dc(_raw) AS mfa_prompts
values(userPrincipalName) by userPrincipalName, status.additionalDetails, appDisplayName,
userAgent, _time | where mfa_prompts > 10 | `azure_ad_multiple_failed_mfa_requests_for_user_filter`'
how_to_implement: You must install the latest version of Splunk Add-on for Microsoft
@@ -40,7 +40,7 @@ tags:
asset_type: Azure Active Directory
confidence: 90
impact: 60
message: Multiple Failed MFA requests for user $body.properties.userPrincipalName$
message: Multiple Failed MFA requests for user $properties.userPrincipalName$
mitre_attack_id:
- T1586
- T1586.003
@@ -62,11 +62,11 @@ tags:
- Splunk Cloud
required_fields:
- _time
- body.properties.status.errorCode
- body.category
- body.properties.authenticationDetails
- body.properties.userPrincipalName
- body.properties.ipAddress
- properties.status.errorCode
- category
- properties.authenticationDetails
- properties.userPrincipalName
- properties.ipAddress
risk_score: 54
security_domain: identity
tests: