NullReceiver is a lean, stealth-focused evolution of DPRK’s blockchain C2 tradecraft that hides a reusable attacker wallet behind ordinary-looking Ethereum transfers, while still exposing just enough bytes to resolve a live command server. Two trojanized npm packages, bianira-ui@1.27.0 and fluid-type-ui@2.0.8, both Tailwind CSS plugin lookalikes, implement a new blockchain-based C2 resolution technique we’re calling NullReceiver. […]
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