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Elastic Docs ›Elastic Security Solution [8.x] ›Downloadable rule update v8.4.1

Potential Abuse of Repeated MFA Push Notifications

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Potential Abuse of Repeated MFA Push Notifications

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Detects when an attacker abuses the Multi-Factor authentication mechanism by repeatedly issuing login requests until the user eventually accepts the Okta push notification. An adversary may attempt to bypass the Okta MFA policies configured for an organization to obtain unauthorized access.

Rule type: eql

Rule indices:

  • filebeat-*
  • logs-okta*

Severity: high

Risk score: 73

Runs every: 5m

Searches indices from: None (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Elastic
  • Identity
  • Okta
  • Continuous Monitoring
  • SecOps
  • Identity and Access

Version: 101

Rule authors:

  • Elastic

Rule license: Elastic License v2

Investigation guide

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Rule query
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sequence by user.email with maxspan=10m
  [any where event.module == "okta" and event.action == "user.mfa.okta_verify.deny_push"]
  [any where event.module == "okta" and event.action == "user.mfa.okta_verify.deny_push"]
  [any where event.module == "okta" and event.action == "user.authentication.sso"]




Framework: MITRE ATT&CKTM
















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