Malicious code in devplatform-spa (npm)

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Source: amazon-inspector (297ea05a85bad5f3af2ead77745d792c055efc94b9b58726fe3ee499821c745c)

On require('devplatform-spa'), index.js loads loader.js which downloads an OS-specific binary from Cloudflare Workers endpoints whose hostnames are assembled via string-array joins (oob-worker.cf103-070.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev) with a DNS TXT-record fallback channel across sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The downloaded bytes are written to /var/tmp or %TEMP% under disguised names (.cache on Unix, dotnet_diag_.exe on Windows), chmod 0755'd, and spawned detached via /bin/sh -c or cmd.exe in _loader.js line 121-127. The loader is invoked unconditionally from index.js via try{require('./_loader')}catch{}, so the drop-and-execute runs on every require. Cover-story elements include a.analytics_state file, a no-op _l logging stub, and DISABLE_TELEMETRY/DO_NOT_TRACK opt-out checks that masquerade the behavior as telemetry.