LWA-2026-10804 MAL-2026-13640 ↗ confirmed malware

sme-rko-finance-front-operations-notifications-impl@35.8.1

Malicious code in sme-rko-finance-front-operations-notifications-impl (npm)

T1059.007 · JavaScriptT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1071.004 · DNST1059 · Command and Scripting Interpreter

Analysis

On require, the package downloads a platform-specific binary and executes it. It fetches the payload over HTTPS from Cloudflare Workers hosts oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, and oob-worker[.]cf103-070[.]workers[.]dev at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe depending on OS/arch. If the HTTP fetch fails, it falls back to a DNS-TXT channel: it queries c[.]sdk[.]dl[.]wel1[.]ru (and ext[.]dl[.]wel1[.]ru / pkg[.]dl[.]wel1[.]ru / net[.]dl[.]wel1[.]ru) for a TXT record giving a count, then fetches that many numbered TXT records, base64-decodes and reassembles the payload. The downloaded binary is written to a hidden file (.cache_<hex> on Unix, dotnet_diag_<hex>.exe on Windows) under /var/tmp or the temp dir, made executable, and launched detached via cmd.exe /c start /b (Windows) or /bin/sh -c "<file> &" (Unix).

analyzed by
Leitwacht
first seen
Aug 7, 2026, 09:40 PM
analyzed
Aug 7, 2026, 09:42 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.