LWA-2026-7438 MAL-2026-12279 ↗ confirmed malware

tinkoff-statist-web-typed-client-test.golden.retriever@20.4.4

Malicious code in tinkoff-statist-web-typed-client-test.golden.retriever (npm)

T1195.002 · Compromise Software Supply ChainT1059.007 · JavaScriptT1059 · Command and Scripting InterpreterT1027 · Obfuscated Files or InformationT1071.001 · Web ProtocolsT1105 · Ingress Tool TransferT1008 · Fallback ChannelsT1573 · Encrypted Channel

Analysis

On require(), the package connects to multiple Cloudflare Workers C2 endpoints (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev) over HTTPS to download a platform-specific binary payload. It also uses a DNS TXT record-based fallback channel at c[.]tin[.]dl[.]well1[.]site. 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. The package has no repository, no README, and no documented purpose matching its name.

analyzed by
Leitwacht
first seen
Aug 2, 2026, 03:16 PM
analyzed
Aug 2, 2026, 03:18 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.