beaver-ui-search-dropdown@35.4.5
Malicious code in beaver-ui-search-dropdown (npm)
Analysis
On module load this package (a stub UI component with no real functionality) executes a hidden dropper (_init.js). It downloads a platform-specific second-stage binary over HTTPS from Cloudflare Workers endpoints oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, and oob-worker[.]cf103-070[.]workers[.]dev at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, and /pkg/package.exe. If HTTPS is blocked it falls back to DNS TXT chunked base64 transfer from the domains c[.]sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, and net[.]dl[.]wel1[.]ru. The downloaded payload is written to /tmp/.cache_<hex> (POSIX) or %TEMP%\dotnet_diag_<hex>.exe (Windows), made executable, and launched as a detached background process (cmd.exe /c start /b on Windows, /bin/sh -c "… &" on POSIX). A marker file in /tmp or %TEMP% throttles repeat execution.
- analyzed by
- Leitwacht
- first seen
- Aug 5, 2026, 02:14 PM
- analyzed
- Aug 5, 2026, 03:50 PM
Related advisories
- bigops-alerts-widget@35.8.3
- dolyame-ui-codemods@35.2.6
- bigops-products-bnpl@35.2.9
- bigops-products-deposits@35.9.1
- bigops-status-selection@35.3.2
- bigops-statements-timeline@35.2.4
- bigops-products-timeline-commons@35.1.6
- bigops-rx-post-message@35.1.5
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.