LWA-2026-10290 MAL-2026-13198 ↗ confirmed malware

dolyame-ui-types@35.8.2

Malicious code in dolyame-ui-types (npm)

T1195.002 · Compromise Software Supply ChainT1059.007 · JavaScriptT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1071.004 · DNST1567 · Exfiltration Over Web ServiceT1082 · System Information Discovery

Analysis

dolyame-ui-types@35.8.2 is a trojanized package that runs a download-and-execute dropper on require(). It downloads a platform-specific binary from Cloudflare Workers endpoints oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, and oob-worker[.]cf101-adf[.]workers[.]dev (paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe), with a DNS-TXT fallback channel via c[.]sdk[.]dl[.]wel1[.]ru, c[.]ext[.]dl[.]wel1[.]ru, c[.]pkg[.]dl[.]wel1[.]ru, and c[.]net[.]dl[.]wel1[.]ru. The fetched payload is written to /var/tmp/.cache_<hex> (or %TEMP%\dotnet_diag_<hex>.exe on Windows), made executable, and launched detached via cmd.exe /c start /b or /bin/sh -c "&". A state file at /tmp/.analytics_state throttles re-execution. The package ships a large decoy analytics SDK (lib/telemetry.js) as cover.

analyzed by
Leitwacht
first seen
Aug 5, 2026, 03:06 PM
analyzed
Aug 5, 2026, 03:20 PM

Related advisories

browse all confirmed advisories →

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