Fake Next.js Repos Deliver In-Memory JS Backdoors Campaign
⚠️ A coordinated developer-targeting campaign uses fake Next.js repositories and job-assessment lures to trick engineers into executing attacker-controlled JavaScript at runtime. Microsoft and third-party researchers identified three execution paths — VS Code workspace tasks (runOn: "folderOpen"), dev-server builds, and backend startup — that all fetch loaders from staging services like Vercel. The in-memory payload profiles hosts, polls for an instanceId and executes server-supplied code to maintain persistent C2 while minimizing disk artifacts.
