LWA-2026-10360 MAL-2026-13163 ↗ confirmed malware

dolyame-ui-layout@35.9.8

Malicious code in dolyame-ui-layout (npm)

T1195.002 · Compromise Software Supply ChainT1059.007 · JavaScriptT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1102 · Web ServiceT1082 · System Information DiscoveryT1059 · Command and Scripting Interpreter

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

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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.