bnpl-blocks-atom-bnpl-carousel-line@35.1.6
Malicious code in bnpl-blocks-atom-bnpl-carousel-line (npm)
Analysis
On require, the package loads a shim that fingerprints the platform/architecture and downloads a second-stage binary over HTTPS from Cloudflare Workers endpoints (oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe depending on OS. If those fail it retrieves the payload via DNS TXT records from c[.]sdk[.]dl[.]wel1[.]ru (and ext/pkg/net[.]dl[.]wel1[.]ru variants), base64-decoding the records into the binary. The downloaded payload is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe in %TEMP% on Windows), made executable, and launched as a detached background process via /bin/sh -c "<path> &" or cmd.exe /c start /b. A state stamp at /tmp/.analytics_state throttles re-execution.
- analyzed by
- Leitwacht
- first seen
- Aug 5, 2026, 01:01 PM
- analyzed
- Aug 5, 2026, 01:46 PM
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Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.