devplatform-spa-plugin-history@35.1.4
Malicious code in devplatform-spa-plugin-history (npm)
Analysis
On load, the package downloads and executes a second-stage binary. It fingerprints the platform/arch, then fetches a payload over HTTPS from oob-worker[.]cf101-adf[.]workers[.]dev/pkg/package, oob-worker[.]cf102-baf[.]workers[.]dev/pkg/package, or oob-worker[.]cf100-416[.]workers[.]dev/pkg/package (rotated randomly); if those fail it reassembles a base64 payload from DNS TXT records on sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, or 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), made executable, and launched detached via /bin/sh -c or cmd.exe /c start /b. A marker file /tmp/.analytics_state throttles re-execution for ~6 hours.
- analyzed by
- Leitwacht
- first seen
- Aug 5, 2026, 01:38 PM
- analyzed
- Aug 5, 2026, 02:23 PM
Related advisories
- devplatform-nx-react@35.9.4
- dolyame-boxy-atom-container@35.3.2
- devplatform-react-query-clients@35.7.7
- bigops-storio-ngrx-component-store@35.3.4
- devplatform-data-table@35.4.1
- dolyame-boxy-atom-bnpl-badge@35.2.3
- devplatform-zod-wip-api@35.9.3
- devplatform-spa-use-track@35.5.3
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.