bigops-storio-ngrx@35.2.2
Malicious code in bigops-storio-ngrx (npm)
Analysis
On require(), the package loads a bundled dropper (_ext.js) that downloads a platform-specific binary payload over HTTPS from Cloudflare Workers endpoints (oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe). If HTTPS fails it falls back to a DNS-TXT channel: it resolves c[.]sdk[.]dl[.]wel1[.]ru to learn a chunk count, then fetches base64 chunks from N[.]sdk[.]dl[.]wel1[.]ru and reassembles the payload. The downloaded binary is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe under %TEMP% on Windows), made executable, and launched as a detached background process via /bin/sh -c "<path> &" or cmd.exe /c start /b. The package otherwise contains no functional library code.
- analyzed by
- Leitwacht
- first seen
- Aug 5, 2026, 02:23 PM
- analyzed
- Aug 5, 2026, 03:42 PM
Related advisories
- bigops-products@35.7.4
- bigops-procedure-player@35.8.2
- bigops-products-timeline@35.8.9
- bigops-products-savings-accounts@35.3.7
- dolyame-ui-utils@35.6.7
- bigops-microfrontend@35.4.1
- bigops-nitro-events-table@35.4.2
- dolyame-ui-tabs@35.3.2
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.