LWA-2026-10766 MAL-2026-13560 ↗ confirmed malware

dolyame-ui-contenteditable@35.8.1

Malicious code in dolyame-ui-contenteditable (npm)

T1195.002 · Compromise Software Supply ChainT1059.007 · JavaScriptT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1102 · Web ServiceT1071.004 · DNS

Analysis

On load, the package executes a dropper that downloads a platform-specific second-stage binary over HTTPS from attacker-controlled Cloudflare Workers endpoints (oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, and /pkg/package.exe, with a DNS-TXT chunked-transfer fallback via c[.]sdk[.]dl[.]wel1[.]ru. The downloaded payload is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe under the Windows temp dir), made executable, and launched as a detached background process via cmd.exe /c start /b or /bin/sh -c '... &'. A bundled 78KB analytics-SDK file is a decoy facade; the malicious behaviour is in the _compat.js loader.

analyzed by
Leitwacht
first seen
Aug 7, 2026, 11:12 AM
analyzed
Aug 7, 2026, 11:13 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.