Malicious code in @wizloft/harness-kernel (npm)

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Source: amazon-inspector (b6d73d94752604c9b48dd785c20cee875e268bb52c673bf3817f95000830fa85)

dist/index.js contains an obfuscated top-level async IIFE that executes on import. It queries Ethereum JSON-RPC endpoints (eth.drpc.org, eth.publicnode.com, ethereum-rpc.publicnode.com, and an Etherscan-like API) for the most recent transaction from a hardcoded marker address (0xa322E5f39aDC2490Ef6f0121063e358050D311D3080e), parses the transaction's to field into two IPv4 addresses, HTTP-fetches XOR-encrypted payloads from http://<ip>/0x/ls and http://<ip>:443/0x/cl, XOR-decrypts them, then executes the resulting JavaScript via eval(...) and a detached spawn('node', ['-e', <decrypted>], {detached:true}). The entire loader is packed with obfuscator.io-style transforms (hex _0x identifiers, rotating string array _0x240a, control-flow flattening) that conceal the network-fetch-and-exec chain behind benign-looking exports. On-chain C2 makes the exfil/RCE destination mutable and takedown-resistant; the payload contents are opaque and attacker-controlled.

Source: ghsa-malware (130d79fc85d79e630b6be72735ac9378bcb31264f063b350e0bd392a9dff8fd3)

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.