my-private-pkg@99.1.1

Summary

setup.py registers a custom install command (PostInstallCommand) that runs my_private_pkg/index.py automatically on pip install. That script gathers installer-side identifiers — os.getlogin(), socket.gethostname(), local IP address, os.getcwd(), platform.system() and platform.machine() — and POSTs them as JSON to a hardcoded collector URL at https://webhook.site/d4d1b01b-708a-40b9-b8c8-187eeecafeed. A duplicate of the exfiltration payload is shipped as vercel_runtime_python/index.py, and vercel_runtime_python/__init__.py contains the same PostInstallCommand wiring referencing my_private_pkg/index.py; the module name mimics Vercel's Python runtime. The package name and the internal vercel_runtime_python module name are consistent with a dependency-confusion lure targeting an internal my-private-pkg name and Vercel's runtime namespace: the only on-install effect is a reconnaissance beacon to an attacker-controlled webhook.site endpoint identifying the host that mistakenly resolved the public name.

Source: amazon-inspector (d8008c5637dfae2dfc4162f1dd5152c5e90e03b0fc8593fda5055f44e9745b22)