LWA-2026-10524 MAL-2026-13130 ↗ confirmed malware

dolyame-boxy-scroll@35.9.9

Malicious code in dolyame-boxy-scroll (npm)

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

Analysis

On import, the package downloads a platform-specific binary payload from obfuscated Cloudflare Workers hosts (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev) with DNS TXT-record fallback domains (sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, net[.]dl[.]wel1[.]ru). It writes the downloaded payload to a temp file (.cache_<hex> on POSIX, dotnet_diag_<hex>.exe on Windows), makes it executable, and launches it as a detached background process (cmd.exe start /b or /bin/sh -c "&"). The payload is fetched from /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe depending on OS/arch.

analyzed by
Leitwacht
first seen
Aug 5, 2026, 03:51 PM
analyzed
Aug 5, 2026, 05:03 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.