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Elastic Docs ›Elastic Security Solution [8.14] ›Detections and alerts ›Prebuilt rule reference

New Okta Authentication Behavior Detected

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New Okta Authentication Behavior Detected

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Detects events where Okta behavior detection has identified a new authentication behavior.

Rule type: query

Rule indices:

  • filebeat-*
  • logs-okta*

Severity: medium

Risk score: 47

Runs every: 15m

Searches indices from: now-30m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Use Case: Identity and Access Audit
  • Tactic: Initial Access
  • Data Source: Okta

Version: 106

Rule authors:

  • Elastic

Rule license: Elastic License v2

Investigation guide

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Triage and analysis

Investigating New Okta Authentication Behavior Detected

This rule detects events where Okta behavior detection has identified a new authentication behavior such as a new device or location.

Possible investigation steps:

  • Identify the user involved in this action by examining the okta.actor.id, okta.actor.type, okta.actor.alternate_id, and okta.actor.display_name fields.
  • Determine the authentication anomaly by examining the okta.debug_context.debug_data.risk_behaviors and okta.debug_context.debug_data.flattened fields.
  • Determine the client used by the actor. Review the okta.client.ip, okta.client.user_agent.raw_user_agent, okta.client.zone, okta.client.device, and okta.client.id fields.
  • If the client is a device, check the okta.device.id, okta.device.name, okta.device.os_platform, okta.device.os_version, and okta.device.managed fields.
  • Review the past activities of the actor involved in this action by checking their previous actions.
  • Examine the okta.request.ip_chain field to potentially determine if the actor used a proxy or VPN to perform this action.
  • Evaluate the actions that happened just before and after this event in the okta.event_type field to help understand the full context of the activity.

False positive analysis:

  • A user may be using a new device or location to sign in.
  • The Okta behavior detection may be incorrectly identifying a new authentication behavior and need adjusted.

Response and remediation:

  • If the user is legitimate and the authentication behavior is not suspicious, no action is required.
  • If the user is legitimate but the authentication behavior is suspicious, consider resetting the user’s password and enabling multi-factor authentication (MFA).
  • If MFA is already enabled, consider resetting MFA for the user.
  • If the user is not legitimate, consider deactivating the user’s account.
  • If this is a false positive, consider adjusting the Okta behavior detection settings.
  • Block the IP address or device used in the attempts if they appear suspicious, using the data from the okta.client.ip and okta.device.id fields.
  • Conduct a review of Okta policies and ensure they are in accordance with security best practices.

Setup

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The Okta Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.

Rule query

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event.dataset:okta.system and okta.debug_context.debug_data.risk_behaviors:*

Framework: MITRE ATT&CKTM

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