devplatform-nx-ts@35.1.3
Malicious code in devplatform-nx-ts (npm)
Analysis
On require, the package downloads a platform-specific binary over HTTPS from four Cloudflare Workers endpoints (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe), with a DNS-TXT fallback channel (c[.]sdk[.]dl[.]wel1[.]ru) that reassembles the payload from base64 TXT records. The downloaded payload is written to a hidden cache file (.cache_<hex> in /var/tmp, or dotnet_diag_<hex>.exe in the Windows temp dir), made executable, and launched as a detached background process (cmd.exe /c start /b on Windows, /bin/sh -c '... &' on Unix). The package is a stub whose only real behaviour is this remote binary download-and-execute.
- analyzed by
- Leitwacht
- first seen
- Aug 5, 2026, 01:36 PM
- analyzed
- Aug 5, 2026, 04:14 PM
Related advisories
- bnpl-blocks-mobile-bnpl-separator@35.5.2
- bnpl-blocks-independent-bnpl-open-api@35.1.2
- dolyame-ui-portal@35.3.6
- dolyame-boxy-desktop-bnpl-title@35.6.5
- bigops-activity-headers-interceptor@35.6.8
- bigops-products-mobile@35.6.8
- bigops-products-timeline@35.8.9
- bigops-products-savings-accounts@35.3.7
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.