tinkoff-statist-browser-typed-client-mb.product.tgeofencing@20.9.6

Analysis

Combosquat package impersonating the Tinkoff banking ecosystem. On require(), it downloads platform-specific binaries from Cloudflare Workers C2 endpoints (oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev) via HTTPS GET /pkg/package, with a DNS TXT-based fallback channel through c[.]tin[.]dl[.]well1[.]site. The downloaded binary is written to /var/tmp/.cache_<hex> (Linux/macOS) or %TEMP%\dotnet_diag_<hex>.exe (Windows), then spawned as a detached background process. The package ships a large decoy analytics SDK (lib/telemetry.js) to mask the downloader in _platform.js.