bigops-web-analytics@35.9.4

Analysis

bigops-web-analytics@35.9.4 is a remote binary dropper disguised as an analytics module. On require(), it downloads a platform-specific executable from Cloudflare Workers hosts oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, and oob-worker[.]cf99-9b3[.]workers[.]dev (paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe), with a DNS-TXT fallback channel via the domains sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, and net[.]dl[.]wel1[.]ru. The downloaded payload is written to a hidden file (.cache_<hex> on Unix, dotnet_diag_<hex>.exe on Windows) under /var/tmp or the system TEMP directory, made executable, and launched as a detached background process (cmd.exe /c start /b or /bin/sh -c "&") with stdio ignored so it outlives the parent. Execution is rate-limited by a state file with a ~6.4-hour TTL.