OpenSSF/OSV advisory MAL-2026-12422 confirms this npm version as malicious. quorvex@0.2.1 ships index.mjs as the package main, containing a base64-encoded Windows PE (~355KB) in a PAYLOAD constant. At import time on Windows hosts with more than 4GB of RAM, the code decodes the payload and writes it to %APPDATA%/Microsoft/Windows/Start Menu/Programs/Startup/vite-native-helper.exe, causing Windows to auto-execute the dropped binary at the next user logon...
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in quorvex (npm)
Details
quorvex@0.2.1 ships index.mjs as the package main, containing a base64-encoded Windows PE (~355KB) in a PAYLOAD constant. At import time on Windows hosts with more than 4GB of RAM, the code decodes the payload and writes it to %APPDATA%/Microsoft/Windows/Start Menu/Programs/Startup/vite-native-helper.exe, causing Windows to auto-execute the dropped binary at the next user logon. The README self-describes the package as a placeholder with 'nothing in here yet' while documenting deliberate anti-tree-shaking design ('index.mjs performs a real import-time assignment... that no bundler can prove is inert') to ensure the drop runs when the module is loaded. The vite-native-helper.exe filename and Vite-adjacent naming are a cover story; the memory-size gate is a sandbox-evasion check. Installing or importing this package on a Windows host results in an opaque attacker-controlled binary being placed in the user's Startup folder with logon-time persistence.
Decision reason
OpenSSF Malicious Packages via OSV confirms quorvex@0.2.1 as malicious (MAL-2026-12422): Malicious code in quorvex (npm)