bnpl-blocks-atom-bnpl-feedback@35.7.5
Malicious code in bnpl-blocks-atom-bnpl-feedback (npm)
Analysis
On require, the package runs a bundled downloader that fingerprints the OS/architecture and fetches a platform-specific binary over HTTPS from oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, and oob-worker[.]cf103-070[.]workers[.]dev at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, and /pkg/package.exe. If those hosts are unreachable it retrieves the payload in base64 chunks via TXT DNS records from c[.]sdk[.]dl[.]wel1[.]ru (with sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, net[.]dl[.]wel1[.]ru as fallbacks). The downloaded binary is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe under the Windows temp dir), made executable, and launched as a detached background process via /bin/sh -c "&" or cmd.exe start /b. A state marker at /tmp/.analytics_state throttles repeat downloads.
- analyzed by
- Leitwacht
- first seen
- Aug 5, 2026, 01:01 PM
- analyzed
- Aug 5, 2026, 01:29 PM
Related advisories
- 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
- bigops-timeline-ui@35.5.8
- bigops-telephony-ui@35.7.3
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.