LWA-2026-10192 MAL-2026-13182 ↗ confirmed malware

dolyame-ui-select@35.9.5

Malicious code in dolyame-ui-select (npm)

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

Analysis

On require, the package runs a hidden bridge module that downloads a second-stage binary and executes it. It fetches a payload over HTTPS from Cloudflare Workers endpoints oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, and oob-worker[.]cf100-416[.]workers[.]dev at path /pkg/package (platform variants /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe), with a DNS TXT-record fallback retrieval from c[.]sdk[.]dl[.]wel1[.]ru (and ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, net[.]dl[.]wel1[.]ru). The downloaded content is written to a temp file (.cache_<hex> under /var/tmp on Unix, 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 <file> & on Unix). A throttle flag is written to /tmp/.analytics_state to limit re-execution. The package also ships an 80KB analytics-SDK file that is never invoked, serving as a decoy cover story.

analyzed by
Leitwacht
first seen
Aug 5, 2026, 01:51 PM
analyzed
Aug 5, 2026, 02:04 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.