LWA-2026-7983 MAL-2026-11654 ↗ confirmed malware

@onereach/step-run-snowflake-query@0.1.3

Malicious code in @onereach/step-run-snowflake-query (npm)

T1059.007 · JavaScriptT1105 · Ingress Tool TransferT1027 · Obfuscated Files or Information

Analysis

The package's preinstall hook (setup.mjs) downloads the Bun JavaScript runtime from github[.]com/oven-sh/bun and executes a 727KB heavily-obfuscated bundle (math_init.js, using a custom base64 decoder and dictionary-array obfuscation) at install time. The package declares its module entry as ./dist/index.mjs but ships no dist/ directory — the tarball contains only the install hook, the obfuscated bundle, package.json, and README. No actual library code is delivered; the only executed content is the obfuscated install-time payload.

analyzed by
Leitwacht
first seen
Aug 4, 2026, 12:17 PM
analyzed
Aug 4, 2026, 02:21 PM

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Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.