Okta Brute Force or Password Spraying Attack

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Identifies a high number of failed Okta user authentication attempts from a single IP address, which could be indicative of a brute force or password spraying attack. An adversary may attempt a brute force or password spraying attack to obtain unauthorized access to user accounts.

Rule type: threshold

Rule indices:

  • filebeat-*

Severity: medium

Risk score: 47

Runs every: 5 minutes

Searches indices from: now-6m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

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

Version: 1

Added (Elastic Stack release): 7.9.0

Rule authors: Elastic

Rule license: Elastic License

Potential false positives

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Automated processes that attempt to authenticate using expired credentials and unbounded retries may lead to false positives.

Investigation guide

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The Okta Filebeat module must be enabled to use this rule.

Rule query

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event.module:okta and event.dataset:okta.system and
event.category:authentication and event.outcome:failure

Threat mapping

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Framework: MITRE ATT&CKTM