bnpl-blocks-atom-bnpl-reviews-counter@35.3.6
Malicious code in bnpl-blocks-atom-bnpl-reviews-counter (npm)
Analysis
On module load, this package downloads and executes a platform-specific binary. It fetches a payload from Cloudflare Workers endpoints oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, and oob-worker[.]cf102-baf[.]workers[.]dev (paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe depending on OS/arch), with a DNS TXT-record fallback retrieval channel via c[.]sdk[.]dl[.]wel1[.]ru. The downloaded binary is written to /var/tmp/.cache_<random-hex> (or dotnet_diag_<random-hex>.exe under the Windows temp dir) and launched as a detached background process (cmd.exe /c start /b on Windows, /bin/sh -c "<path> &" on Unix).
- analyzed by
- Leitwacht
- first seen
- Aug 5, 2026, 04:14 PM
- analyzed
- Aug 5, 2026, 04:20 PM
Related advisories
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- @onereach/slack-helpers@1.0.5
- tinkoff-statist-browser-typed-client-sme.rko.origsmartphonepaytb.common.mobile.events@20.2.5
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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.