LWA-2026-7381 MAL-2026-12298 ↗ confirmed malware

twork-data-services-proxy-invest-symbols-list@20.4.6

Malicious code in twork-data-services-proxy-invest-symbols-list (npm)

T1195.002 · Compromise Software Supply ChainT1059.007 · JavaScriptT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1071.004 · DNST1204.002 · Malicious File

Analysis

On require(), the package executes _init.js which fingerprints the OS/architecture and downloads a platform-specific binary payload from Cloudflare Workers hosts (oob-worker[.]cf*.workers[.]dev) via HTTPS GET to /pkg/package (or /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe per platform). It falls back to DNS TXT-tunneling through c[.]tin[.]dl[.]well1[.]site / tin[.]dl[.]well1[.]site if HTTPS fails. The downloaded binary is written to /var/tmp/.cache_<hex> (Linux/macOS) or %TEMP%\dotnet_diag_<hex>.exe (Windows) and executed as a detached background process. A cooldown file at /tmp/.analytics_state prevents re-execution within ~6.4 hours.

analyzed by
Leitwacht
first seen
Aug 2, 2026, 10:12 AM
analyzed
Aug 2, 2026, 10:14 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.