statist-browser-typed-client-test.jumpwork.circuitbreaker @20.8.2

Summary

On require() of the package's main entry, _compat.js runs as a side effect: it selects a per-platform payload, fetches a native binary over HTTPS from one of several Cloudflare Workers hosts whose names are reconstructed at runtime by joining small string fragments (e.g. oob-worker.cf102-baf.workers.dev , oob-worker.cf103-070.workers.dev , oob-worker.cf100-416.workers.dev ), writes it to /tmp/.cache_<hex> on Unix or %TEMP%\dotnet_diag_<hex>.exe on Windows, chmods it 0755, and spawns it detached via /bin/sh -c "<file> &" or cmd /c start /b . A DNS-TXT covert channel provides a fallback delivery path against *.dl.well1.site (tin/tina/ldr/win subdomains), retrieving a count record at c.<domain> and then base64-encoded chunks from <i>.<domain> that are concatenated and executed. A second, larger duplicate of the same dropper (dynamic child_"+"process require, chmod-plus-detached-spawn, DNS discovery, base64 buffer assembly) is shipped as lib/telemetry.js in the tarball. Hostname string-array obfuscation and decoy filenames (dotfile cache, dotnet_diag_*.exe ) indicate intentional evasion; installing or importing this package executes attacker-controlled native code on the developer's machine.

Source: amazon-inspector (6d969f292b82b34df445017d86910903f577428c88bd312736ef2c03f9381e4f)