Name:GitHub Organizations Disable 2FA Requirement id:3ed0d6ba-4791-4fa8-a1ef-403e438c7033 version:9 date:None author:Patrick Bareiss, Splunk status:production type:Anomaly Description:The following analytic detects when two-factor authentication (2FA) requirements are disabled in GitHub Organizations. The detection monitors GitHub Organizations 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:
how_to_implement:You must ingest GitHub Organizations logs using Splunk Add-on for Github using a Personal Access Token https://splunk.github.io/splunk-add-on-for-github-audit-log-monitoring/Install/ . known_false_positives:No false positives have been identified at this time. References: -https://splunk.github.io/splunk-add-on-for-github-audit-log-monitoring/Install/ -https://www.googlecloudcommunity.com/gc/Community-Blog/Monitoring-for-Suspicious-GitHub-Activity-with-Google-Security/ba-p/763610 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' analytic_story:['GitHub Malicious Activity']
