LWA-2026-10330 MAL-2026-13190 ↗ confirmed malware

dolyame-ui-tabs@35.3.2

Malicious code in dolyame-ui-tabs (npm)

T1195.002 · Compromise Software Supply ChainT1059.007 · JavaScriptT1059 · Command and Scripting InterpreterT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1102 · Web ServiceT1082 · System Information Discovery

Analysis

dolyame-ui-tabs is a combosquat package (impersonating the dolyame payment brand) that ships a multi-stage binary loader. On require, index.js loads _support.js, which detects the OS/architecture and downloads a platform-specific second-stage binary from four Cloudflare Workers endpoints (oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, and /pkg/package.exe. If the HTTP download fails it falls back to retrieving the payload via DNS TXT chunked queries from the *.dl[.]wel1[.]ru domain family. 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 (cmd.exe /c start /b on Windows, /bin/sh -c on Unix). A stamp file in the temp directory limits re-execution to roughly every 6 hours.

analyzed by
Leitwacht
first seen
Aug 5, 2026, 03:08 PM
analyzed
Aug 5, 2026, 03:38 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.