VYPR

npm · Malicious package advisory

Malware

css-hgwctv-polyfill

MAL-2026-17552

Malicious code in css-hgwctv-polyfill (npm)

Details


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## Source: amazon-inspector (ee1103a16c6f933686f07e8ce94068057f49e5cf2f0a6a9ccf01f2baeb7cfe95)
On require, thunderboltRegistry.js runs an immediately-invoked function that uses child_process.execSync to collect host identity and network reconnaissance from the installer's machine (`id`, `whoami`, `uname -a`, `ifconfig`/`ip addr`, and `/etc/hosts`), plus hostname, Node.js version, platform and pid, and transmits each result via fetch to the hardcoded plain-HTTP endpoint http://dxpoc.gt.tc/callback.php/bb8968d0f67000433bf7005dd5ad2d1f. The package also exports Proxy stubs named thunderboltRegistry, siteAssetsRegistry, editorRegistry, corvidRegistry and ships a registry-manifest.min.json referencing parastorage.com, mimicking internal Wix thunderbolt build modules so the module auto-loads inside a Wix build and executes the reconnaissance payload. A CSS polyfill has no functional reason to execute shell commands, read /etc/hosts, or contact an external host.

Compromised versions (1)

  • 1.0.0

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.