Utopia Tech
Security1 min read

Newly SLEEPWALKER Backdoor Waits for One Crafted Packet, Then Runs Its Own Bytecode

An independent malware researcher has documented a previously unreported Windows backdoor, dubbed SLEEPWALKER, that stays inert in memory until a specifically crafted network packet reaches the machine and then runs commands written in a 23-instruction language of its own design. The sample is an unsigned 64-bit Windows dynamic-link library (DLL) of 59,904 bytes, built to be si

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Utopia Tech

August 26, 2026 · 1 min read

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An independent malware researcher has documented a previously unreported Windows backdoor, dubbed SLEEPWALKER, that stays inert in memory until a specifically crafted network packet reaches the machine and then runs commands written in a 23-instruction language of its own design. The sample is an unsigned 64-bit Windows dynamic-link library (DLL) of 59,904 bytes, built to be side-loaded into&

Originally published at thehackernews.com

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