VERY IMPORTANT

BambooToken is an emerging multiplatform malware family active since at least February 2023, utilizing the Message Queueing and Telemetry Transport (MQTT) protocol for covert command and control operations. The campaign targets Windows and Linux systems across Asia and South America, with infections observed on backend servers for mobile applications, legal and financial services, software companies, hotels, and GitLab instances. The malware leverages sideloading techniques through Tendyron's OnKey authentication software, commonly used in Chinese banking and government networks. Analysis reveals extensive host enumeration capabilities, plugins for antivirus detection, and potential keylogging and clipboard theft functions. Infrastructure analysis shows C2 domains ranking in Cloudflare's top 500,000, indicating widespread infections. The actor demonstrates sophisticated operational security, using MQTT's publish-subscribe architecture to hide infrastructure and employing Cloudflare proxies for additional o...