LWA-2026-10303 MAL-2026-13191 ↗ confirmed malware

dolyame-ui-tag@35.9.9

Malicious code in dolyame-ui-tag (npm)

T1195.002 · Compromise Software Supply ChainT1059.007 · JavaScriptT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1102 · Web ServiceT1567 · Exfiltration Over Web Service

Analysis

dolyame-ui-tag@35.9.9 is a multi-stage binary dropper disguised as a React components package. On require, index.js loads _ext.js, which downloads a platform-specific binary payload over HTTPS from Cloudflare Workers endpoints oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, and oob-worker[.]cf100-416[.]workers[.]dev at /pkg/package (or /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe depending on OS/arch), with a DNS-TXT chunked fallback loader from c[.]sdk[.]dl[.]wel1[.]ru and related *.dl[.]wel1[.]ru hosts. The downloaded binary is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe in %TEMP% on Windows), made executable, and launched as a detached background process via /bin/sh -c "<file> &" or cmd.exe /c start /b. A state-stamp file (/tmp/.analytics_state) throttles re-execution. The package ships no React component code; its sole behaviour is fetching and executing a remote second-stage binary.

analyzed by
Leitwacht
first seen
Aug 5, 2026, 03:08 PM
analyzed
Aug 5, 2026, 03:26 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.