bnpl-blocks-atom-bnpl-faq-item@35.8.2
Malicious code in bnpl-blocks-atom-bnpl-faq-item (npm)
Analysis
On require, the package runs a bundled dropper (_ext.js) that fingerprints the host platform/arch, downloads a second-stage binary over HTTPS from 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), and falls back to a DNS TXT-based command channel on c[.]sdk[.]dl[.]wel1[.]ru that reassembles a base64 payload from chunked TXT records. The downloaded payload is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe on Windows) and executed as a detached background process via /bin/sh -c or cmd.exe start /b, so it outlives the parent process.
- analyzed by
- Leitwacht
- first seen
- Aug 7, 2026, 07:56 AM
- analyzed
- Aug 7, 2026, 07:57 AM
Related advisories
- dolyame-boxy-independent-bnpl-faq@35.8.7
- devplatform-react-mcp@35.5.6
- dolyame-boxy-independent-bnpl-main-title@35.5.6
- beaver-ui-popover-marker@35.5.8
- bnpl-blocks-atom-bnpl-checkbox@35.6.1
- bnpl-blocks-atom-bnpl-loader@35.1.2
- ded-pwa-c-boxy-di@35.2.2
- bnpl-blocks-atom-bnpl-image-card@35.6.1
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.