dolyame-ui-block@35.1.8

Analysis

dolyame-ui-block@35.1.8 is a multi-stage binary dropper disguised as a React UI toolkit. Requiring the package immediately runs an adapter that downloads a platform-specific executable from Cloudflare Workers C2 endpoints (oob-worker[.]cf100-416[.]worker[.]s[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe, with a DNS-TXT fallback resolver (sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, net[.]dl[.]wel1[.]ru). The downloaded payload is written to the temp directory as .cache_<hex> (or dotnet_diag_<hex>.exe on Windows) and executed as a detached background process (cmd.exe start /b on Windows, /bin/sh -c '... &' on POSIX). The remote binary is attacker-controlled and runs on the victim's machine.