LWA-2026-8005 MAL-2026-11611 ↗ confirmed malware

@onereach/or-file-uploader-next@0.0.10

Malicious code in @onereach/or-file-uploader-next (npm)

T1059.007 · JavaScriptT1105 · Ingress Tool TransferT1195.002 · Compromise Software Supply ChainT1027 · Obfuscated Files or Information

Analysis

The package's preinstall hook (node setup.mjs) downloads the Bun JavaScript runtime from github[.]com/oven-sh/bun and executes a 727KB obfuscated payload file (math_init.js) with it at install time. The payload is encoded with a custom obfuscation scheme and contains eval/Function/child_process calls, and is unrelated to the package's declared purpose as a Vue file-uploader component. The package also declares dependencies on the known-malicious packages @onereach/styles and @onereach/ui-components. Installing this package runs an opaque, obfuscated payload on the victim's machine during npm install.

analyzed by
Leitwacht
first seen
Aug 4, 2026, 11:57 AM
analyzed
Aug 4, 2026, 03:01 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.