If this package is installed
Remove it, treat the machine (or CI runner) as compromised, and rotate every secret, token and key it could access — from a different, clean machine.
Details
Source: amazon-inspector (a563317f01b921a7425ae16f740c8fa729db03087afacfea903db3dd90e15803)
The package's preinstall lifecycle script (preinstall.js) opens a TCP socket to the hardcoded remote host 120.55.170.103:8888, spawns cmd.exe, and pipes the shell's stdio through the socket, giving the remote party full interactive command execution on the installer's machine during `npm install`. The same script also collects installer host identifiers (os.hostname(), os.userInfo().username, os.platform(), process.version, process.cwd()) while the reverse shell is connected. Cover-story strings in the file ("Proof of Concept", "Dependency Confusion") do not change the observed behavior: install-time remote code execution against the installer.