dolyame-ui-filter@35.5.3
Malicious code in dolyame-ui-filter (npm)
Analysis
On require, this package (a "UI toolkit") fingerprints the OS/architecture and downloads a platform-specific binary from three Cloudflare Workers hosts (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe, with a DNS-TXT chunked-transfer fallback from c[.]sdk[.]dl[.]wel1[.]ru. The fetched binary is written to /var/tmp/.cache_<hex> (or %TEMP%\dotnet_diag_<hex>.exe on Windows), made executable, and launched as a detached background process via cmd.exe /c start /b or /bin/sh -c "fp &". The package executes this remote binary download-and-run automatically on import, with no user interaction.
- analyzed by
- Leitwacht
- first seen
- Aug 5, 2026, 02:06 PM
- analyzed
- Aug 5, 2026, 03:52 PM
Related advisories
- devplatform-spa-plugin-notifier@35.5.7
- beaver-ui-actions-button@5.4.7
- snavbox@1.0.1
- bnpl-blocks-mobile-bnpl-faq@35.5.3
- bigops-product-list@35.8.5
- bigops-procedure-player@35.8.2
- dolyame-boxy-atom-bnpl-dangerously-html@35.5.4
- devplatform-spa-plugin-error-boundary@35.4.6
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.