tinkoff-statist-browser-typed-client-dwh.chimera.base@20.2.3

Analysis

This package is a trojanized downloader that runs on require(). It fingerprints the host (platform, architecture, hostname, CPU count, memory), then connects to multiple Cloudflare Workers C2 endpoints (oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev) over HTTPS to download a platform-specific binary payload. It also uses DNS TXT queries to c[.]tin[.]dl[.]well1[.]site as a fallback C2 channel. The downloaded binary is written to /var/tmp/.cache_<hex> (Linux/macOS) or %TEMP%\dotnet_diag_<hex>.exe (Windows) and executed as a detached background process. The package name impersonates a financial services brand (Tinkoff) with a long nonsensical suffix, has no repository or README, and ships a large decoy analytics SDK (lib/telemetry.js) to camouflage the malicious _support.js loader.