dolyame-ui-checkbox@35.6.9
Malicious code in dolyame-ui-checkbox (npm)
Analysis
dolyame-ui-checkbox is a combosquat package (dolyame + "ui-checkbox") that acts as a multi-stage downloader. On import it fetches a platform-specific second-stage binary over HTTPS from Cloudflare Workers endpoints (oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, and /pkg/package.exe, with a DNS-TXT chunked-transfer fallback via the wel1[.]ru domain (c[.]sdk[.]dl[.]wel1[.]ru, sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, net[.]dl[.]wel1[.]ru). The downloaded payload is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe in the Windows temp directory), made executable, and launched as a detached background process via cmd.exe /c start /b on Windows or /bin/sh -c "<path> &" on Unix. A lock file at /tmp/.analytics_state throttles repeated execution.
- analyzed by
- Leitwacht
- first seen
- Aug 5, 2026, 02:07 PM
- analyzed
- Aug 5, 2026, 03:52 PM
Related advisories
- dolyame-ui-label@35.7.8
- dolyame-ui-layout@35.9.8
- 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
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.