carbon-monorepo@20.1.1

Analysis

The postinstall hook runs index.js, which executes system commands (whoami, uname -a, cat /etc/passwd, cat /etc/shadow, ps aux) and collects the full process environment, hostname, platform, current working directory, package.json contents, and the node_modules listing, then POSTs all of it to the remote host ywy8qnd4a931ga4v74k70b9g67c00qof[.]oastify[.]com on port 80. The package is named and described as an esbuild platform build but is unrelated to esbuild.