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