deposits-common@35.5.4

Analysis

deposits-common@35.5.4 executes a multi-stage dropper on require. The bundled _support.js fingerprints the OS/architecture, then downloads a second-stage binary over HTTPS from Cloudflare Workers hosts oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev, and oob-worker[.]cf100-416[.]workers[.]dev (paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe). If those fail it falls back to a covert DNS-TXT channel: it queries c[.]sdk[.]dl[.]wel1[.]ru (and sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, net[.]dl[.]wel1[.]ru) for chunked base64 records that are reassembled into the payload. The downloaded binary is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe in the Windows temp dir), made executable, and launched as a detached background process via /bin/sh -c or cmd.exe /c start /b. Execution is throttled by a stamp file at /tmp/.analytics_state and can be suppressed by setting DISABLE_TELEMETRY, ANALYTICS_OPT_OUT, or DO_NOT_TRACK. The package also ships an 81KB decoy telemetry module (lib/telemetry.js) that is not the actual payload.