LWA-2026-10193 MAL-2026-13183 ↗ confirmed malware

dolyame-ui-skeleton@35.2.5

Malicious code in dolyame-ui-skeleton (npm)

T1059.007 · JavaScriptT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1102 · Web ServiceT1059 · Command and Scripting Interpreter

Analysis

dolyame-ui-skeleton@35.2.5 is a remote-code-execution dropper. Loading the package (index.js requires _vendor.js) triggers a downloader that fetches a binary payload over HTTPS from Cloudflare Workers endpoints oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, and oob-worker[.]cf99-9b3[.]workers[.]dev at platform-selected paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe. If HTTPS fails it falls back to DNS TXT chunked base64 retrieval from c[.]sdk[.]dl[.]wel1[.]ru. The downloaded payload is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe in %TEMP% on Windows), made executable, and launched detached via /bin/sh -c "<path> &" or cmd.exe /c start /b. The package ships no actual UI component code; its sole purpose is to download and execute a remote binary.

analyzed by
Leitwacht
first seen
Aug 5, 2026, 01:51 PM
analyzed
Aug 5, 2026, 02:04 PM

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Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.