{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/penetration-testing/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[],"_cs_exploited":false,"_cs_products":["Splunk Enterprise","Splunk Enterprise Security","Splunk Cloud"],"_cs_severities":["high"],"_cs_tags":["command-and-control","red-teaming","penetration-testing","windows"],"_cs_type":"advisory","_cs_vendors":["Splunk"],"content_html":"\u003cp\u003eNorthStar C2 is an open-source command and control (C2) framework designed for red teaming and penetration testing, developed by Engin Demirbilek. The framework includes a server-side GUI web application for managing sessions and a client-side stager for communicating with the C2 server. This brief focuses on detecting the execution of the NorthStar C2 agent, specifically the initial stager (NorthstarStager.exe) and the persistent agent (SystemHealthCheck.exe) on Windows systems. Identifying these processes is crucial for defenders to detect and respond to potential unauthorized use of the NorthStar C2 framework within their environment. This detection is based on identifying specific process names and original file names associated with NorthStar C2 components.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker gains initial access to the target system through unspecified means.\u003c/li\u003e\n\u003cli\u003eThe attacker deploys the NorthStar C2 stager (NorthstarStager.exe) onto the target system.\u003c/li\u003e\n\u003cli\u003eThe stager is executed, initiating communication with the C2 server.\u003c/li\u003e\n\u003cli\u003eThe stager establishes a session with the server-side GUI web application of the NorthStar C2 framework.\u003c/li\u003e\n\u003cli\u003eThe attacker deploys and executes the persistent agent (SystemHealthCheck.exe) on the target.\u003c/li\u003e\n\u003cli\u003eThe persistent agent establishes a persistent communication channel with the C2 server.\u003c/li\u003e\n\u003cli\u003eThe attacker uses the C2 channel to execute arbitrary commands on the compromised system.\u003c/li\u003e\n\u003cli\u003eThe attacker performs actions on objectives, such as lateral movement, data exfiltration, or further exploitation.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful execution of NorthStar C2 agents can lead to full system compromise, allowing attackers to perform unauthorized actions, exfiltrate sensitive data, and establish a persistent presence within the network. While NorthStar C2 is intended for legitimate penetration testing, its misuse can have severe consequences, potentially impacting confidentiality, integrity, and availability of critical systems and data. Undetected NorthStar C2 activity can lead to prolonged attacker dwell time and increased potential for damage.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDeploy the Sigma rule \u003ccode\u003eDetect NorthStar Stager Execution\u003c/code\u003e to your SIEM to detect the initial execution of NorthstarStager.exe based on process name and original file name.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u003ccode\u003eDetect NorthStar Persistent Agent Execution\u003c/code\u003e to your SIEM to detect the execution of SystemHealthCheck.exe.\u003c/li\u003e\n\u003cli\u003eEnable process creation logging with file metadata, specifically original file name, to enhance detection capabilities for NorthStar C2 agents.\u003c/li\u003e\n\u003cli\u003eReview and filter alerts generated by these rules to reduce false positives, especially in environments where authorized penetration testing activities are conducted.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-03T12:00:00Z","date_published":"2024-01-03T12:00:00Z","id":"/briefs/2024-01-northstar-c2/","summary":"This brief details detection strategies for NorthStar C2 agent execution on Windows endpoints, an open-source command and control framework used for penetration testing and red teaming.","title":"NorthStar C2 Agent Execution Detection","url":"https://feed.craftedsignal.io/briefs/2024-01-northstar-c2/"}],"language":"en","title":"CraftedSignal Threat Feed — Penetration-Testing","version":"https://jsonfeed.org/version/1.1"}