ID | Technique | Tactic |
---|---|---|
T1562.008 | Disable or Modify Cloud Logs | Defense Evasion |
T1195 | Supply Chain Compromise | Initial Access |
Detection: GitHub Enterprise Pause Audit Log Event Stream
Description
The following analytic detects when a user pauses audit log event streaming in GitHub Enterprise. The detection monitors GitHub Enterprise audit logs for configuration changes that temporarily suspend the audit log streaming functionality, which is used to send audit events to security monitoring platforms. This behavior could indicate an attacker attempting to prevent their malicious activities from being logged and detected by temporarily disabling the audit trail. For a SOC, identifying the pausing of audit logging is critical as it may be a precursor to other attacks where adversaries want to operate undetected during the pause window. The impact could be severe as organizations temporarily lose visibility into user actions, configuration changes, and security events within their GitHub Enterprise environment, potentially allowing attackers to perform malicious activities without detection during the pause period. This creates a temporary blind spot in security monitoring and incident response capabilities.
Search
1`github_enterprise` action=audit_log_streaming.update reason="User initiated pause"
2| fillnull
3| stats count min(_time) as firstTime max(_time) as lastTime by actor, actor_id, actor_ip, actor_is_bot, actor_location.country_code, business, business_id, user_agent, action, reason
4| eval user=actor
5| `security_content_ctime(firstTime)`
6| `security_content_ctime(lastTime)`
7| `github_enterprise_pause_audit_log_event_stream_filter`
Data Source
Name | Platform | Sourcetype | Source |
---|---|---|---|
GitHub Enterprise Audit Logs | N/A | 'httpevent' |
'http:github' |
Macros Used
Name | Value |
---|---|
github_enterprise | source=http:github sourcetype=httpevent |
github_enterprise_pause_audit_log_event_stream_filter | search * |
github_enterprise_pause_audit_log_event_stream_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
You must ingest GitHub Enterprise logs using Audit log streaming as described in this documentation https://docs.github.com/en/enterprise-cloud@latest/admin/monitoring-activity-in-your-enterprise/reviewing-audit-logs-for-your-enterprise/streaming-the-audit-log-for-your-enterprise#setting-up-streaming-to-splunk using a Splunk HTTP Event Collector.
Known False Positives
unknown
Associated Analytic Story
Risk Based Analytics (RBA)
Risk Message:
Audit log event streaming is paused by $user$
Risk Object | Risk Object Type | Risk Score | Threat Objects |
---|---|---|---|
user | user | 25 | user_agent |
References
Detection Testing
Test Type | Status | Dataset | Source | Sourcetype |
---|---|---|---|---|
Validation | ✅ Passing | N/A | N/A | N/A |
Unit | ✅ Passing | Dataset | http:github |
httpevent |
Integration | ✅ Passing | Dataset | http:github |
httpevent |
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