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RustDuck: An In-Depth Analysis of a Two-Stage Botnet

released on 2026-07-02 @ 09:56:56 AM
Since February 2026, a new malware family utilizing a Loader plus Core two-stage architecture has been detected, primarily conducting large-scale DDoS attacks with strong cross-platform capabilities. The family is transitioning from C to Rust programming language, demonstrating rapid evolution in anti-defense and traffic encryption techniques. Propagation methods include weak password brute-forcing via Telnet and SSH, exploitation of IoT device vulnerabilities affecting Android ADB, TVT API, Ruijie, TP-Link, and ZTE devices, plus web component vulnerabilities in ThinkPHP, Jenkins, and YARN. The botnet employs sophisticated anti-debugging mechanisms including environment checks, honeypot detection, and timing verification. Communication protocols leverage Curve25519 key exchange, ChaCha20-Poly1305 and AES-GCM encryption, implementing strict handshake verification processes. Over 20 IPs have been observed spreading the botnet, with multiple variants showing increasingly complex encryption and obfuscation techn