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New Windows malware lays dormant until a custom command activates it like a sleeper agent
SLEEPWALKER is a newly discovered Windows malware implant that contains no malicious code, instead lying dormant until receiving a specially crafted network signal. Disguised as ESET's Management Agent, it evades security software entirely. Once activated, it can schedule tasks, communicate with remote systems, and execute code. Researcher Dominik Reichel believes it's likely a nation-state tool targeting specific victims, though no active campaigns or confirmed victims have been identified.