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 (5000b7987ca50d065efc0f5a3ba7c724cb73ac0e23f54347cff8b30aa6eb5d3b)
package.json declares a postinstall script that opens an interactive bash reverse shell to the hardcoded remote address 124.221.154.135:4444 during npm install, granting the operator of that endpoint remote command execution on the installer's host. The tarball additionally ships postinstall.js, which enumerates the installer's ~/.ssh directory and POSTs the file listing along with username and platform information to https://124.221.154.135/post. Both mechanisms target the same hardcoded IP, and the reverse shell fires automatically on npm install.