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 (307cdf72132de0cbce8bbbe7fd65b7c89d9c879fd917ff6a9e06e41ff56d299e)
On require(), _runtime.js selects a platform-specific asset, downloads a binary over https.get from hardcoded Cloudflare Workers hosts (with a DNS TXT base64 fallback under dl.wel1.ru), writes it to /var/tmp or %TEMP% under names mimicking diagnostic tools (dotnet_diag_*.exe,.cache_*,.analytics_state), chmods it 0o755, and spawns it detached via spawn('/bin/sh', ['-c', fp+' &'], {detached:true}) or cmd.exe /c start /b. C2 hostnames and fallback domains are reconstructed at runtime from split-string arrays to evade static scanners. No hash or signature verification. The destinations are non-publisher, mutable, and disguised, and the package advertises itself as test fixtures while performing this drop-and-execute on load.