ID | Technique | Tactic |
---|---|---|
T1110 | Brute Force | Credential Access |
Detection: Okta Account Locked Out
DEPRECATED DETECTION
This detection has been marked as deprecated by the Splunk Threat Research team. This means that it will no longer be maintained or supported. If you have any questions or concerns, please reach out to us at research@splunk.com.
Description
DEPRECATION NOTE - This search has been deprecated and replaced with Okta Multiple Accounts Locked Out
. The following analytic utilizes the user.acount.lock event to identify associates who are locked out of Okta. An adversary attempting to brute force or password spray account names may lock accounts out depending on the threshold.
Search
1`okta` eventType=user.account.lock
2| stats count min(_time) as firstTime max(_time) as lastTime values(displayMessage) values(src_user) as user by src_ip eventType status
3| where count >=3
4| `security_content_ctime(firstTime)`
5| `security_content_ctime(lastTime)`
6| `okta_account_locked_out_filter`
Data Source
Name | Platform | Sourcetype | Source | Supported App |
---|---|---|---|---|
N/A | N/A | N/A | N/A | N/A |
Macros Used
Name | Value |
---|---|
okta | eventtype=okta_log OR sourcetype = "OktaIM2:log" |
okta_account_locked_out_filter | search * |
okta_account_locked_out_filter
is an empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.
Annotations
Default Configuration
This detection is configured by default in Splunk Enterprise Security to run with the following settings:
Setting | Value |
---|---|
Disabled | true |
Cron Schedule | 0 * * * * |
Earliest Time | -70m@m |
Latest Time | -10m@m |
Schedule Window | auto |
Creates Risk Event | True |
Implementation
This analytic is specific to Okta and requires Okta logs to be ingested.
Known False Positives
False positives may be present. Tune Okta and tune the analytic to ensure proper fidelity. Modify risk score as needed. Drop to anomaly until tuning is complete.
Associated Analytic Story
Risk Based Analytics (RBA)
Risk Message | Risk Score | Impact | Confidence |
---|---|---|---|
$src_user$ account has been locked out. | 64 | 80 | 80 |
References
Detection Testing
Test Type | Status | Dataset | Source | Sourcetype |
---|---|---|---|---|
Validation | Not Applicable | N/A | N/A | N/A |
Unit | ✅ Passing | Dataset | Okta |
OktaIM2:log |
Integration | ✅ Passing | Dataset | Okta |
OktaIM2:log |
Replay any dataset to Splunk Enterprise by using our replay.py
tool or the UI.
Alternatively you can replay a dataset into a Splunk Attack Range
Source: GitHub | Version: 1