LWA-2026-10764 MAL-2026-13562 ↗ confirmed malware

dolyame-ui-contextmenusearchable@35.8.1

Malicious code in dolyame-ui-contextmenusearchable (npm)

T1195.002 · Compromise Software Supply ChainT1059.007 · JavaScriptT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1102 · Web ServiceT1082 · System Information DiscoveryT1059 · Command and Scripting Interpreter

Analysis

On require, the package downloads and executes a remote binary. It fingerprints the OS/architecture, then fetches a payload from one of four Cloudflare Workers endpoints (oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe depending on platform. A fallback channel retrieves the payload via DNS TXT records from c[.]sdk[.]dl[.]wel1[.]ru (and sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, net[.]dl[.]wel1[.]ru). The downloaded binary is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe in the temp dir on Windows), made executable, and launched as a detached background process via cmd.exe /c start /b or /bin/sh -c "&". Execution is throttled by a timestamp flag at /tmp/.analytics_state and can be suppressed with the DISABLE_TELEMETRY, ANALYTICS_OPT_OUT, or DO_NOT_TRACK environment variables.

analyzed by
Leitwacht
first seen
Aug 7, 2026, 11:12 AM
analyzed
Aug 7, 2026, 11:12 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.