devplatform-po-declaration-generator@35.2.7
Malicious code in devplatform-po-declaration-generator (npm)
Analysis
The package executes a multi-stage dropper on require. index.js loads _init.js, which fingerprints the OS/architecture and downloads a second-stage binary over HTTPS from Cloudflare Workers endpoints oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, and oob-worker[.]cf100-416[.]workers[.]dev (paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe). If those fail it falls back to a DNS TXT-based base64 transfer channel via c[.]sdk[.]dl[.]wel1[.]ru (and 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 in the temp dir on Windows) and executed detached via cmd.exe /c start /b on Windows or /bin/sh -c "<path> &" on Unix, so it runs in the background and outlives the parent process.
- analyzed by
- Leitwacht
- first seen
- Aug 5, 2026, 01:44 PM
- analyzed
- Aug 5, 2026, 02:52 PM
Related advisories
- dolyame-boxy-atom-icon-loader@35.1.8
- devplatform-table@35.7.6
- dolyame-boxy-atom-desktop-bnpl-dangerously-html@35.4.8
- devplatform-select-user@35.4.4
- devplatform-spa-plugin-error-boundary@35.4.6
- devplatform-select-fields@35.2.6
- devplatform-s3-client@35.9.5
- devplatform-nx-husky@35.7.7
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.