N4D Mesh Controller: New infrastructure, a UPX-packed agent labeled "go-titan," and how to hunt for it

N4D Mesh Controller is an active, evolving Linux malware campaign that exploits exposed Model Context Protocol (MCP) servers and AI infrastructure for credential theft, lateral movement, persistence, and command-and-control, using a UPX-packed "go-titan" agent and rotating delivery infrastructure, making threat hunting and detection essential for defenders.