LWA-2026-10811 MAL-2026-13635 ↗ confirmed malware

sme-rko-finance-front-operations-fee@35.8.1

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

T1105 · Ingress Tool TransferT1059.007 · JavaScriptT1071.001 · Web ProtocolsT1102 · Web ServiceT1008 · Fallback ChannelsT1082 · System Information Discovery

Analysis

On require, the package fingerprints the host platform and downloads a second-stage binary over HTTPS from a rotating set of Cloudflare Workers endpoints (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe. If those fail it falls back to a DNS TXT-based channel via c[.]sdk[.]dl[.]wel1[.]ru (base64-encoded chunks). The downloaded payload is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe under %TEMP% on Windows), made executable, and launched as a detached background process (cmd.exe /c start /b on Windows, /bin/sh -c "<path> &" on Unix). A stamp file /tmp/.analytics_state limits repeat runs.

analyzed by
Leitwacht
first seen
Aug 7, 2026, 09:42 PM
analyzed
Aug 7, 2026, 09:45 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.