LWA-2026-10728 MAL-2026-13592 ↗ confirmed malware

dolyame-ui-pageheader@35.8.1

Malicious code in dolyame-ui-pageheader (npm)

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

Analysis

On import, the package downloads a second-stage binary over HTTPS from Cloudflare Workers endpoints (oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe, with a DNS TXT chunked-transfer fallback from c[.]sdk[.]dl[.]wel1[.]ru / ext[.]dl[.]wel1[.]ru / pkg[.]dl[.]wel1[.]ru / net[.]dl[.]wel1[.]ru. It writes the downloaded payload to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe in TEMP on Windows), makes it executable, and launches it as a detached background process via cmd.exe start /b or /bin/sh -c. The bundled lib/telemetry.js is a decoy analytics facade.

analyzed by
Leitwacht
first seen
Aug 7, 2026, 10:29 AM
analyzed
Aug 7, 2026, 10:30 AM

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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.