devplatform-rest-resources-v1@35.2.3

Summary

On require() of the package, index.js loads _bootstrap.js which selects a platform-specific endpoint, fetches an opaque native binary over HTTPS from author-controlled Cloudflare Workers subdomains (oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev) with a DNS-TXT fallback to *.dl.wel1.ru, writes it to /tmp or %TEMP% under disguised names (.cache_<rand> on POSIX, dotnet_diag_<rand>.exe on Windows), chmods 0o755 on POSIX, and spawns it detached with output suppressed via spawn("/bin/sh", ["-c", fp+" &"], {detached:true}).unref() (and a cmd equivalent on Windows). The C2 hostnames, fallback DNS domain, and the child_process module name are assembled from array joins (e.g. ["oob-worker.cf102-","baf.work","ers.de","v"].join("") and ['sdk.dl','.wel1.ru'].join("")) to hide indicators from static scanners. Additional cover-story mechanisms include stamp-based execution gating (STAMP_TTL) and honoring DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK env vars while presenting the fetched artifacts as diagnostic/analytics files. No signature verification, no version pinning, and the payload is a bare native executable. Every installer that installs or requires this package receives and executes attacker-controlled code.

Source: amazon-inspector (73a9f72a6d741b5f055738486ee936f61ff645ed6dfdb0e34e746195da5b0d03)