Cybercriminals are merging traditional malware operations with cryptocurrency-focused attacks, creating hybrid threat ecosystems. Modern crypto drainers have evolved into automated systems capable of extracting assets across multiple blockchains with minimal user interaction, supported by well-developed underground marketplaces offering drainer-as-a-service kits. Two case studies exemplify this convergence: StepDrainer operates as a multichain drainer-as-a-service platform that abuses Web3Modal and smart contract methods across over 20 blockchain networks, using AI-themed lures and polished interfaces to deceive victims into connecting wallets. EtherRAT represents a hybrid Windows implant delivered through trojanized TFTP installers, combining traditional RAT capabilities with blockchain-aware functionality including Ethereum RPC endpoints and embedded wallet addresses. Both threats demonstrate how cryptocurrency theft infrastructure now intersects with mainstream attack surfaces affecting enterprise envir...