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 (13827ca573a120c853faeb2b9ccfe34d627e098b5917cee97d5eecd45b81e9dc)
index.js unconditionally requires./_runtime on package load. _runtime.js selects a platform-specific endpoint, downloads a binary over HTTPS from one of four string-split *.workers.dev hosts (e.g. oob-worker.cf103-070.workers.dev), with a DNS TXT chunked-base64 fallback to sdk.dl.wel1.ru, writes the payload to /tmp or %TEMP% under a decoy name (.cache_<hex> or dotnet_diag_<hex>.exe), chmods it 0755, and detach-spawns it via /bin/sh -c or cmd.exe. Network destinations are assembled at runtime by joining fragmented string arrays to evade static analysis, filenames impersonate dotnet diagnostics, and execution is rate-limited via a stamp file in /tmp. The fetched bytes are attacker-controlled opaque native executables unrelated to the package's stated purpose.