GitHub Repo

Detection: Splunk Information Disclosure on Account Login

REMOVED DETECTION

This detection has been removed from the Splunk Threat Research content library and is no longer maintained or supported.

Reason: Detection has been deprecated. The logic is not accurately detecting the malicious activity.

Removed in version: 6.4.0

If you have any questions or concerns, please reach out to us at research@splunk.com.

Updated Date: 2026-07-29 ID: 2bae5d19-6d1b-4db0-82ab-0af5ac5f836c Author: Rod Soto Type: Hunting Product: Splunk Enterprise Security

Description

This is a composed hunting search that looks for possible user enumeration attempts when SAML is enabled on a Splunk instance by capturing different responses from server.

1`splunkd` component=UiAuth status=failure action=login TcpChannelThread 
2| stats count min(_time) as firstTime max(_time) as lastTime by user status action clientip 
3| `security_content_ctime(firstTime)` 
4| `security_content_ctime(lastTime)` 
5| `splunk_information_disclosure_on_account_login_filter`

Data Source

Name Platform Sourcetype Source
Splunk Splunk icon Splunk 'splunkd_ui_access' 'splunkd_ui_access.log'

Macros Used

Name Value
splunkd index=_internal sourcetype=splunkd
splunk_information_disclosure_on_account_login_filter ``
splunk_information_disclosure_on_account_login_filter is an empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.

Annotations

- MITRE ATT&CK
+ Kill Chain Phases
+ NIST
+ CIS
- Threat Actors
ID Technique Tactic

Default Configuration

This detection is configured by default in Splunk Enterprise Security to run with the following settings:

Setting Value
Disabled true
Cron Schedule N/A
Earliest Time N/A
Latest Time N/A
Schedule Window N/A
Creates Finding (Notable) No
Creates Intermediate Finding (Risk Event) No
Hunting detections do not generate a Finding (Notable) or Intermediate Findings (Risk Events).

Implementation

Requires access to internal indexes _internal.

Known False Positives

This is a hunting search and requires operator to search for large number of login failures from several users indicating possible user enumeration attempts. May capture genuine login failures.

Associated Analytic Story

No associated analytic story

References

Detection Testing

Test Type Status Dataset Source Sourcetype
Validation Not Applicable N/A N/A N/A
Unit Not Applicable N/A N/A N/A

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: 8