sme-rko-finance-front-operations-penalty@35.8.1
Malicious code in sme-rko-finance-front-operations-penalty (npm)
Analysis
On require, the package loads _runtime.js, which fingerprints the OS/architecture and downloads a second-stage binary over HTTPS from a rotating set of Cloudflare Workers endpoints (oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe. If HTTPS fails, it retrieves the payload in base64 chunks via DNS TXT queries against c[.]sdk[.]dl[.]wel1[.]ru (and per-platform variants ext/pkg/net[.]dl[.]wel1[.]ru). The downloaded binary is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe under %TEMP% on Windows), chmod 755, and launched detached via /bin/sh or cmd.exe so it outlives the parent. A marker file (/tmp/.analytics_state or %TEMP%\analytics_state) limits re-execution to one run per ~5.7-hour window. The bundled lib/telemetry.js is a decoy analytics-SDK facade.
- analyzed by
- Leitwacht
- first seen
- Aug 7, 2026, 10:10 PM
- analyzed
- Aug 7, 2026, 10:11 PM
Related advisories
- sme-rko-finance-front-operations-overnight@35.8.1
- sme-rko-finance-front-operations-pegasus@35.8.1
- sme-rko-finance-front-operations-fee@35.8.1
- sme-rko-finance-front-operations-domain@35.8.1
- sme-rko-finance-front-operations-feed-models@35.8.1
- sme-rko-finance-front-operations-feed-impl@35.8.1
- sme-rko-finance-front-operations-notifications-models@35.8.1
- sme-rko-finance-front-operations-holding-domain@35.8.1
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.