MAL-2026-14156

    Dashboard / Malicious Package / MAL-2026-14156

    MAL-2026-14156

    Published: 18 Aug 2026Last Modified: 18 Aug 2026

    Summary: Malicious code in typscript-cli (npm)

    Details: Source: amazon-inspector (1425e6f0bb2305eeddecaab5403e09ead0e8f60b9b1f817581a343cb5a3dd062) typscript-cli is a typosquat of 'typescript' (index.js exports an empty object; no library functionality). Its scripts/postinstall.js is the only functional code and executes on npm install. It XOR-decodes (key 'stf2026') four embedded numeric arrays to reconstruct a download URL and a PowerShell 'bridge' command, downloads a Windows executable to %TEMP%\main.exe, and spawns it detached with windowsHide:true. On WSL/Linux hosts it uses child_process.exec with the XOR-decoded PowerShell bridge command to drop and run the same payload on the Windows side. The same postinstall also POSTs a platform label to a hardcoded bare-IP endpoint 193.70.34.101:20099/vote over plain HTTP, with the host assembled from a split array ['193','70','34','101'].join('.') to evade literal-string scanning. There is no publisher-matched destination, no version pinning, and no integrity check on the fetched binary.

    References: https://www.npmjs.com/package/typscript-cli/v/1.0.0

    Affected packages

    Package

    Name: typscript-cli

    Purl: pkg:npm/typscript-cli

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    1.0.0