IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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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:

Use Case: Identity and Access Audit
Data Source: Okta
Use Case: Identity and Access Audit
Tactic: Credential Access

Version: 103

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.dataset == "okta.system" and event.module == "okta" and event.action == "user.mfa.okta_verify.deny_push"]
  [any where event.dataset == "okta.system" and event.module == "okta" and event.action == "user.mfa.okta_verify.deny_push"]
  [any where event.dataset == "okta.system" and event.module == "okta" and event.action == "user.authentication.sso"]

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Credential Access
- ID: TA0006
- Reference URL: https://attack.mitre.org/tactics/TA0006/
Technique:
- Name: Brute Force
- ID: T1110
- Reference URL: https://attack.mitre.org/techniques/T1110/

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