bnpl-blocks-atom-desktop-bnpl-dangerously-html@35.9.9
Malicious code in bnpl-blocks-atom-desktop-bnpl-dangerously-html (npm)
Analysis
On require, this package downloads and executes a remote binary payload. index.js loads _ext.js, which fetches a platform-specific executable from attacker-controlled Cloudflare Workers endpoints (oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe. If HTTPS fails it falls back to a DNS-TXT chunked base64 transfer from the wel1[.]ru domain (c[.]sdk[.]dl[.]wel1[.]ru). The downloaded binary is written to /var/tmp/.cache_<hex> (or %TEMP%\dotnet_diag_<hex>.exe on Windows), made executable, and launched detached via cmd.exe /c start /b or /bin/sh -c. The package ships a large decoy telemetry module that is never executed.
- analyzed by
- Leitwacht
- first seen
- Aug 5, 2026, 04:16 PM
- analyzed
- Aug 5, 2026, 04:30 PM
Related advisories
- bnpl-blocks-atom-desktop-bnpl-text@35.2.5
- dolyame-boxy-independent-bnpl-separator@35.2.6
- bnpl-blocks-atom-desktop-bnpl-highlighted-text@35.2.3
- dolyame-boxy-independent-bnpl-title@35.7.3
- dolyame-boxy-independent-bnpl-tiles@35.7.4
- dolyame-boxy-independent-bnpl-search@35.5.6
- dolyame-boxy-independent-bnpl-video@35.4.4
- dolyame-boxy-independent-bnpl-table@35.3.4
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.