LWA-2026-10767 MAL-2026-13559 ↗ confirmed malware

dolyame-ui-collapseblock@35.8.1

Malicious code in dolyame-ui-collapseblock (npm)

T1059 · Command and Scripting InterpreterT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1102 · Web ServiceT1082 · System Information Discovery

Analysis

On require, this package downloads and executes a remote binary. It fingerprints the platform/arch, then fetches a payload from Cloudflare Workers hosts oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev and oob-worker[.]cf102-baf[.]workers[.]dev at /pkg/package (platform-specific paths for arm64/macOS/Windows), with a DNS-TXT fallback channel that reassembles a base64 payload from TXT records under c[.]sdk[.]dl[.]wel1[.]ru. The downloaded binary is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe on Windows), chmod 0755, and launched detached via /bin/sh -c '<path> &' (or cmd.exe /c start /b).

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