dolyame-ui-layout@35.9.8
Malicious code in dolyame-ui-layout (npm)
Analysis
On load, the package downloads and executes a second-stage binary. It fingerprints the OS/architecture, then fetches a payload over HTTPS from Cloudflare Workers endpoints oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, and oob-worker[.]cf102-baf[.]workers[.]dev at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe. If HTTPS fails it falls back to a DNS-TXT chunked base64 transfer from the domains sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, and net[.]dl[.]wel1[.]ru. The downloaded binary is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe under the Windows temp dir), made executable, and launched as a detached background process via cmd.exe /c start /b or /bin/sh -c. A marker file /tmp/.analytics_state throttles repeated execution.
- analyzed by
- Leitwacht
- first seen
- Aug 5, 2026, 02:05 PM
- analyzed
- Aug 5, 2026, 03:51 PM
Related advisories
- dolyame-ui-money@35.6.1
- dolyame-ui-mixins@35.1.4
- beaver-ui-search-dropdown@35.4.5
- bigops-alerts-widget@35.8.3
- dolyame-ui-codemods@35.2.6
- bigops-products-bnpl@35.2.9
- bigops-products-deposits@35.9.1
- bigops-status-selection@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.