bnpl-blocks-atom-bnpl-base-popup@35.2.9
Malicious code in bnpl-blocks-atom-bnpl-base-popup (npm)
Analysis
On require, the package executes a bundled bootstrap that downloads a platform-specific binary from a rotating set of Cloudflare Workers hosts (oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev) at /pkg/package (or /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe), with a DNS-TXT base64 fallback channel via c[.]sdk[.]dl[.]wel1[.]ru. The downloaded payload is written to a hidden file (.cache_<hex> in /var/tmp, or dotnet_diag_<hex>.exe in %TEMP% on Windows), made executable, and launched as a detached background process (cmd.exe /c start /b on Windows, /bin/sh -c "<file> &" on Unix). The bootstrap can be suppressed by setting DISABLE_TELEMETRY, ANALYTICS_OPT_OUT, or DO_NOT_TRACK.
- analyzed by
- Leitwacht
- first seen
- Aug 5, 2026, 01:00 PM
- analyzed
- Aug 5, 2026, 01:46 PM
Related advisories
- bnpl-blocks-atom-bnpl-no-index-link@35.1.2
- bnpl-blocks-atom-bnpl-link-avatar@35.4.8
- bnpl-blocks-atom-bnpl-dangerously-html@35.2.4
- bnpl-blocks-atom-bnpl-fade-overflow@35.7.2
- bnpl-blocks-atom-bnpl-dolyame-button@35.1.8
- bnpl-blocks-atom-bnpl-dropdown@35.5.5
- bnpl-blocks-atom-bnpl-button@35.4.7
- blocks-sahred-atom-mobile-app-bar-action@35.6.8
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.