LWA-2026-7941 MAL-2026-11597 ↗ confirmed malware

@onereach/content-builder-template-compiler@0.0.5

Malicious code in @onereach/content-builder-template-compiler (npm)

T1059.007 · JavaScriptT1105 · Ingress Tool Transfer

Analysis

The package runs a preinstall hook (node setup.mjs) that downloads the Bun JavaScript runtime from github[.]com/oven-sh/bun and then executes a bundled 727KB obfuscated script (math_init.js) during installation. The package's declared function is template compilation, which does not require downloading a runtime or executing a large obfuscated script at install time. The obfuscated script's behavior is not visible statically; the install-time download-and-execute of an unrelated obfuscated payload is the risk indicator.

analyzed by
Leitwacht
first seen
Aug 4, 2026, 01:31 PM
analyzed
Aug 4, 2026, 01:48 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.