Melofee is a Linux implant malware that has evolved over three years to include a modular architecture with hot-loadable components for shell access, file management, and command execution. It incorporates a kernel rootkit based on the Reptile project to enhance stealth and supports multiple communication protocols with RC4 encryption. The malware infrastructure uses fake certificates impersonating legitimate entities and shows code similarities with Windows implants linked to Chinese state-sponsored groups. Its modular design allows dynamic loading of up to eleven specialized modules via a common plugin interface.