LWA-2026-7948 MAL-2026-11636 ↗ confirmed malware

@onereach/si-divider@0.4.13

Malicious code in @onereach/si-divider (npm)

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

Analysis

The package is a Vue.js UI divider component whose published tarball was trojanized: its preinstall hook (node setup.mjs) downloads the Bun JavaScript runtime from github[.]com/oven-sh/bun releases and then executes a 727KB heavily-obfuscated payload file (math_init.js) with it. The payload is a single-line custom base-N alphabet-decoder blob (javascript-obfuscator style) that hides its actual behaviour; the component itself has no legitimate need to download a runtime or run an obfuscated payload at install time. The install hook runs automatically on npm install.

analyzed by
Leitwacht
first seen
Aug 4, 2026, 12:17 PM
analyzed
Aug 4, 2026, 01:56 PM

Related advisories

browse all confirmed advisories →

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