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 (0f6433a65cdc6a8c5ce6486234ee3b6a17842ff9b51a9c33448a3dcf9dfcfd4d)
index.js unconditionally requires./setup.js, which on module load selects an OS/arch-specific asset path and downloads a binary from Cloudflare Workers hostnames assembled via split-string obfuscation (oob-worker.cf101-adf.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf100-416.workers.dev), with a DNS-TXT base64-chunk fallback channel over sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru. The downloaded bytes are written to a disguised temp filename (.cache_<hex> on Unix, dotnet_diag_<hex>.exe on Windows), chmod 0755, and spawned detached via `/bin/sh -c fp &` or `cmd.exe /c start /b`. Destination hostnames are constructed at runtime by joining fragmented string arrays, and a TTL flag file throttles re-execution. Installing or requiring this package causes attacker-controlled code to run on the installer's host.