LWA-2026-10535 MAL-2026-13304 ↗ confirmed malware

dolyame-boxy-desktop-bnpl-header@35.8.8

Malicious code in dolyame-boxy-desktop-bnpl-header (npm)

T1059 · Command and Scripting InterpreterT1059.007 · JavaScriptT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1102 · Web ServiceT1568 · Dynamic ResolutionT1082 · System Information Discovery

Analysis

On require, this package downloads and executes a remote binary. It fingerprints the platform/arch, then fetches a platform-specific payload over HTTPS from four Cloudflare Workers endpoints (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe. If those fail it retrieves the payload via DNS TXT queries against *.dl[.]wel1[.]ru (c[.]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 '... &'. The package also ships a decoy telemetry module (lib/telemetry.js) to disguise the activity.

analyzed by
Leitwacht
first seen
Aug 5, 2026, 05:14 PM
analyzed
Aug 5, 2026, 05:16 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.