tinkoff-statist-browser-typed-client-itsa.candy.selfservicesupport.frontend.events@20.1.8

Analysis

On require(), the package fingerprints the host OS and CPU architecture, then attempts to download a second-stage binary from Cloudflare Workers C2 servers (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev) via HTTPS GETs to paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe depending on platform. If HTTPS fails, it falls back to a DNS TXT-based data channel via c[.]tin[.]dl[.]well1[.]site (and platform-specific variants tina[.]dl[.]well1[.]site, ldr[.]dl[.]well1[.]site, win[.]dl[.]well1[.]site) to reconstruct a base64-encoded payload. The downloaded binary is written to /var/tmp/.cache_<random> (Linux/macOS) or %TEMP%\dotnet_diag_<random>.exe (Windows) and executed as a detached background process. A stamp file at /tmp/.analytics_state or %TEMP%\analytics_state rate-limits re-execution. The package name impersonates a Tinkoff internal dependency chain and has no repository or documented purpose.