Tox P2P protocol Cookie Request packet observed (stage 1 of handshake, possible Tox-based C2, e.g. AvisLoader)

Arnold Chan@slaz

•updated Sep 25, 2026•0•0•2

Detects a sequence of Tox P2P protocol packets consisting of a Cookie Request, Cookie Response, and Crypto Handshake within a single network flow. This pattern is indicative of the Tox P2P protocol, which is sometimes abused by malware (e.g., AvisLoader) for command-and-control (C2) communications to evade traditional network inspection.