The OCRFix botnet exemplifies a sophisticated attack chain utilizing the BNB Smart Chain testnet to conceal its command and control (C2) infrastructure within smart contracts. This three-stage botnet employs JSON-RPC to query these smart contracts at runtime for the C2 domain, allowing seamless infrastructure updates through simple blockchain transactions. Notably, the malware's design necessitates no binary updates on infected machines; they simply check in for updates at defined intervals.