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 (185d53460e4ec6534c0b4c8f3de1c0eb2d0134eaf161d8e0211a46bca273ad69)
On require(), the package loads _platform.js which selects a platform-specific path (/pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe), downloads a binary over HTTPS from obfuscated Cloudflare Workers endpoints (oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf99-9b3.workers.dev), writes it to /tmp or %TEMP% under disguised names (dotnet_diag_<tag>.exe on Windows,.cache_<tag> on Unix impersonating Microsoft dotnet-diag), chmods 0755, and spawns it detached via /bin/sh or cmd. Host names are reconstructed at runtime through split-string join to evade static analysis, and a fallback covert channel resolves TXT records under *.dl.wel1.ru (sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru), reading a chunk count from c.<domain> and base64-decoding chunks from <i>.<domain> TXT records to reassemble and execute the payload. A marker file named.analytics_state and a 'Skip in CI environments' comment further disguise intent. The package advertises itself as a trivial loader library; the shipped code contains no library functionality — only the dropper.