bnpl-blocks-atom-bnpl-badge@35.6.8
Malicious code in bnpl-blocks-atom-bnpl-badge (npm)
Analysis
On require, the package loads a bundled polyfill that immediately downloads a platform-specific binary from three Cloudflare Workers hosts (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev) at /pkg/package (or /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe), with a DNS-TXT chunked fallback from *.dl[.]wel1[.]ru. The downloaded payload is written to /var/tmp/.cache_<hex> (or 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 '... &'. Execution is rate-limited by a filesystem timestamp stamp.
- analyzed by
- Leitwacht
- first seen
- Aug 5, 2026, 01:00 PM
- analyzed
- Aug 5, 2026, 01:34 PM
Related advisories
- bnpl-api@35.9.5
- bnpl-blocks-atom-bnpl-feedback@35.7.5
- bigops-watermark@35.9.5
- bnpl-blocks-atom-bnpl-news-card@35.6.8
- bigops-watchdog-angular@35.4.8
- bigops-tasks@35.1.4
- bigops-utils@35.4.8
- bigops-tcrm-auth@35.8.5
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.