{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/vendors/rapid7/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[],"_cs_exploited":false,"_cs_products":["Velociraptor"],"_cs_severities":["medium"],"_cs_tags":["vulnerability","denial-of-service","information-disclosure"],"_cs_type":"advisory","_cs_vendors":["Rapid7"],"content_html":"\u003cp\u003eMultiple vulnerabilities have been identified in Rapid7 Velociraptor. An attacker could potentially exploit these vulnerabilities to achieve information disclosure or to trigger a denial-of-service (DoS) condition. While specific CVEs or technical details are not provided in the advisory, the potential impact necessitates proactive monitoring and mitigation strategies to prevent exploitation. This issue was reported on 2026-05-04. Defenders should monitor for unusual activity related to Velociraptor instances, particularly activity indicative of unauthorized data access or resource exhaustion.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies a vulnerable instance of Rapid7 Velociraptor.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious request targeting one of the undisclosed vulnerabilities.\u003c/li\u003e\n\u003cli\u003eThe vulnerable Velociraptor instance processes the malicious request.\u003c/li\u003e\n\u003cli\u003eFor information disclosure, the system exposes sensitive data such as configuration details, user information, or internal system data, accessible to the attacker.\u003c/li\u003e\n\u003cli\u003eFor Denial of Service, the vulnerable component consumes excessive resources (CPU, memory, network bandwidth).\u003c/li\u003e\n\u003cli\u003eLegitimate user requests to Velociraptor are delayed or fail due to resource exhaustion.\u003c/li\u003e\n\u003cli\u003eThe attacker repeats the malicious request to sustain the Denial of Service condition.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of these vulnerabilities could lead to unauthorized disclosure of sensitive information managed by Rapid7 Velociraptor. A denial-of-service attack could disrupt monitoring operations and prevent legitimate users from accessing or utilizing the Velociraptor platform, impacting incident response capabilities. The number of affected instances and specific sectors are currently unknown.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMonitor network traffic to Velociraptor instances for suspicious patterns and anomalies indicative of exploitation attempts (network_connection).\u003c/li\u003e\n\u003cli\u003eImplement rate limiting and input validation mechanisms on Velociraptor endpoints to mitigate potential DoS attacks and information disclosure vulnerabilities (webserver).\u003c/li\u003e\n\u003cli\u003eMonitor Velociraptor logs for error messages or unusual activity patterns that may indicate exploitation attempts (file_event).\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-04T09:14:11Z","date_published":"2026-05-04T09:14:11Z","id":"/briefs/2026-05-velociraptor-vulns/","summary":"Multiple vulnerabilities in Rapid7 Velociraptor could allow an attacker to disclose information or cause a denial of service.","title":"Multiple Vulnerabilities in Rapid7 Velociraptor","url":"https://feed.craftedsignal.io/briefs/2026-05-velociraptor-vulns/"},{"_cs_actors":[],"_cs_cves":[],"_cs_exploited":false,"_cs_products":["Elastic Defend","SentinelOne Cloud Funnel","Corretto JDK","UEM Proxy Server","UEM Core","dbeaver.exe","Docker","Chrome","Internet Explorer","PyCharm Community Edition","Firefox","VirtualBox","Puppet","nexpose","Silverfort AD Adapter","Nessus","VMware View","Advanced Port Scanner","DesktopCentral Agent","LanGuard","SAP BusinessObjects","SuperScan","ZSATunnel"],"_cs_severities":["medium"],"_cs_tags":["kerberoasting","credential-access","lateral-movement","windows"],"_cs_type":"threat","_cs_vendors":["Elastic","SentinelOne","Amazon","BlackBerry","DBeaver","Docker","Google","Microsoft","JetBrains","Mozilla","Oracle","Puppet Labs","Rapid7","Silverfort","Tenable","VMware","GFI","SAP","Zscaler"],"content_html":"\u003cp\u003eThis detection identifies unusual processes initiating network connections to the standard Kerberos port (88) on Windows systems. Typically, the \u003ccode\u003elsass.exe\u003c/code\u003e process handles Kerberos traffic on domain-joined hosts. The rule aims to detect processes other than \u003ccode\u003elsass.exe\u003c/code\u003e communicating with the Kerberos port, which could indicate malicious activity such as Kerberoasting (T1558.003) or Pass-the-Ticket (T1550.003). The detection is designed to work with data from Elastic Defend and SentinelOne Cloud Funnel. This can help security teams identify potential credential access attempts and lateral movement within the network.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker compromises a user account or system within the domain.\u003c/li\u003e\n\u003cli\u003eThe attacker executes a malicious binary or script (e.g., PowerShell) on the compromised system.\u003c/li\u003e\n\u003cli\u003eThe malicious process attempts to request Kerberos service tickets (TGS) for various services within the domain. This is done by connecting to the Kerberos port (88) on a domain controller.\u003c/li\u003e\n\u003cli\u003eThe attacker uses tools like \u003ccode\u003eRubeus\u003c/code\u003e or \u003ccode\u003eKerberoast.ps1\u003c/code\u003e to enumerate and request TGS tickets.\u003c/li\u003e\n\u003cli\u003eThe unusual process (not \u003ccode\u003elsass.exe\u003c/code\u003e) sends Kerberos traffic to the domain controller.\u003c/li\u003e\n\u003cli\u003eThe attacker extracts the Kerberos tickets from memory or network traffic.\u003c/li\u003e\n\u003cli\u003eThe attacker cracks the offline TGS tickets to obtain service account passwords (Kerberoasting).\u003c/li\u003e\n\u003cli\u003eThe attacker uses the compromised service account credentials to move laterally within the network or access sensitive data.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eA successful Kerberoasting or Pass-the-Ticket attack can lead to unauthorized access to sensitive resources and lateral movement within the network. Attackers can compromise service accounts with elevated privileges, potentially leading to domain-wide compromise. Detection of this behavior can prevent attackers from gaining access to critical assets. While the exact number of victims and sectors targeted are unknown, this technique is widely used by various threat actors in targeted attacks.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDeploy the \u0026ldquo;Kerberos Traffic from Unusual Process\u0026rdquo; Sigma rule to your SIEM and tune for your environment. Enable network connection logging to capture the necessary traffic.\u003c/li\u003e\n\u003cli\u003eInvestigate any alerts triggered by the Sigma rule, focusing on the process execution chain and potential malicious binaries.\u003c/li\u003e\n\u003cli\u003eReview event ID 4769 for suspicious ticket requests as mentioned in the rule\u0026rsquo;s documentation.\u003c/li\u003e\n\u003cli\u003eExamine host services for suspicious entries as outlined in the original Elastic detection rule using Osquery.\u003c/li\u003e\n\u003cli\u003eMonitor for processes connecting to port 88, filtering out legitimate Kerberos clients like \u003ccode\u003elsass.exe\u003c/code\u003e, using the \u0026ldquo;Detect Kerberos Traffic from Non-Standard Process\u0026rdquo; Sigma rule.\u003c/li\u003e\n\u003cli\u003eInvestigate processes identified by the rule and compare them to the list of legitimate processes to identify unauthorized connections to the Kerberos port.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-03T14:00:00Z","date_published":"2024-01-03T14:00:00Z","id":"/briefs/2024-01-03-kerberoasting-unusual-process/","summary":"Detects network connections to the standard Kerberos port from an unusual process other than lsass.exe, potentially indicating Kerberoasting or Pass-the-Ticket activity on Windows systems.","title":"Kerberos Traffic from Unusual Process","url":"https://feed.craftedsignal.io/briefs/2024-01-03-kerberoasting-unusual-process/"}],"language":"en","title":"CraftedSignal Threat Feed — Rapid7","version":"https://jsonfeed.org/version/1.1"}