Okta Brute Force or Password Spraying Attack

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: 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: 8

Rule authors:

Elastic

Rule license: Elastic License v2

Investigation guide

edit

## Setup

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

Rule query

edit

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

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/

« Potential Abuse of Repeated MFA Push Notifications Okta User Session Impersonation »