mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
Eric McGinnis
65 lines
4.1 KiB
YAML
65 lines
4.1 KiB
YAML
name: GitHub Enterprise Disable 2FA Requirement
|
|
id: 5a773226-ebd7-480c-a819-fccacfeddcd9
|
|
version: 8
|
|
creation_date: '2025-01-15'
|
|
modification_date: '2026-05-13'
|
|
author: Patrick Bareiss, Splunk
|
|
status: production
|
|
type: Anomaly
|
|
description: The following analytic detects when two-factor authentication (2FA) requirements are disabled in GitHub Enterprise. The detection monitors GitHub Enterprise audit logs for 2FA requirement changes by tracking actor details, organization information, and associated metadata. For a SOC, identifying disabled 2FA requirements is critical as it could indicate attempts to weaken account security controls. Two-factor authentication is a fundamental security control that helps prevent unauthorized access even if passwords are compromised. Disabling 2FA requirements could allow attackers to more easily compromise accounts through password-based attacks. The impact of disabled 2FA includes increased risk of account takeover, potential access to sensitive code and intellectual property, and compromise of the software supply chain. This activity could be part of a larger attack chain where an adversary first disables security controls before attempting broader account compromises.
|
|
data_source:
|
|
- GitHub Enterprise Audit Logs
|
|
search: |-
|
|
`github_enterprise` action=org.disable_two_factor_requirement OR action=business.disable_two_factor_requirement
|
|
| fillnull
|
|
| stats count min(_time) as firstTime max(_time) as lastTime
|
|
BY actor, actor_id, actor_is_bot,
|
|
actor_location.country_code, business, business_id,
|
|
user_agent, action
|
|
| eval user=actor
|
|
| `security_content_ctime(firstTime)`
|
|
| `security_content_ctime(lastTime)`
|
|
| `github_enterprise_disable_2fa_requirement_filter`
|
|
how_to_implement: 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: No false positives have been identified at this time.
|
|
references:
|
|
- https://www.googlecloudcommunity.com/gc/Community-Blog/Monitoring-for-Suspicious-GitHub-Activity-with-Google-Security/ba-p/763610
|
|
- 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
|
|
drilldown_searches:
|
|
- name: View the detection results for - "$user$"
|
|
search: '%original_detection_search% | search user = "$user$"'
|
|
earliest_offset: $info_min_time$
|
|
latest_offset: $info_max_time$
|
|
- name: View risk events for the last 7 days for - "$user$"
|
|
search: '| from datamodel Risk.All_Risk | search normalized_risk_object IN ("$user$") | stats count min(_time) as firstTime max(_time) as lastTime values(search_name) as "Search Name" values(risk_message) as "Risk Message" values(analyticstories) as "Analytic Stories" values(annotations._all) as "Annotations" values(annotations.mitre_attack.mitre_tactic) as "ATT&CK Tactics" by normalized_risk_object | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`'
|
|
earliest_offset: 7d
|
|
latest_offset: "0"
|
|
intermediate_findings:
|
|
entities:
|
|
- field: user
|
|
type: user
|
|
score: 20
|
|
message: $user$ disabled 2FA requirement
|
|
threat_objects:
|
|
- field: user_agent
|
|
type: http_user_agent
|
|
analytic_story:
|
|
- GitHub Malicious Activity
|
|
asset_type: GitHub
|
|
mitre_attack_id:
|
|
- T1685
|
|
- T1195
|
|
product:
|
|
- Splunk Enterprise
|
|
- Splunk Enterprise Security
|
|
- Splunk Cloud
|
|
category: cloud
|
|
security_domain: network
|
|
tests:
|
|
- name: True Positive Test
|
|
attack_data:
|
|
- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/github_disable_two_factor_requirement/github.json
|
|
source: http:github
|
|
sourcetype: httpevent
|
|
test_type: unit
|