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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Okta Brute Force or Password Spraying Attack

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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-*
logs-okta*

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
Identity
Okta
Continuous Monitoring
SecOps
Identity and Access

Version: 2 (version history)

Added (Elastic Stack release): 7.9.0

Last modified (Elastic Stack release): 7.10.0

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

Threat mapping

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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/

Rule version history

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Version 2 (7.10.0 release)

Updated query, changed from:

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

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