travel-core-typings-reducers@20.7.8

Analysis

On require(), the package loads _ext.js which fingerprints the host platform (OS, architecture, CPU count, memory, hostname) and then downloads a second-stage binary from one of four Cloudflare Workers C2 endpoints (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev) over HTTPS. The binary is written to /var/tmp/.cache_<random-hex> (or %TEMP%\dotnet_diag_<hex>.exe on Windows) and spawned as a detached background process. If HTTPS fails, the package falls back to DNS TXT record exfiltration via c[.]tin[.]dl[.]well1[.]site to retrieve the payload. The package has no repository, no README, and no lifecycle scripts — the payload runs immediately on import.