bnpl-blocks-atom-bnpl-skeleton@35.6.3
Malicious code in bnpl-blocks-atom-bnpl-skeleton (npm)
Analysis
On require, the package fingerprints the host platform/arch and downloads a platform-specific binary over HTTPS from Cloudflare Workers hosts oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, and oob-worker[.]cf103-070[.]workers[.]dev (paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe). If those fail it falls back to a DNS-TXT-chunked download from c[.]sdk[.]dl[.]wel1[.]ru / ext[.]dl[.]wel1[.]ru / pkg[.]dl[.]wel1[.]ru / net[.]dl[.]wel1[.]ru. The downloaded binary is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe on Windows), made executable, and launched detached in the background via /bin/sh -c or cmd.exe /c start /b.
- analyzed by
- Leitwacht
- first seen
- Aug 5, 2026, 04:15 PM
- analyzed
- Aug 5, 2026, 04:18 PM
Related advisories
- devplatform-cli-contracts@35.7.3
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- 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
- devplatform-spa-devtools@35.2.6
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.