pfp-forms-mobile-sme-group-tiles@20.3.6
Malicious code in pfp-forms-mobile-sme-group-tiles (npm)
Analysis
On require(), the package executes a multi-stage binary downloader. It fingerprints the host (platform/architecture) to select the correct payload variant, then attempts HTTPS GET requests to four Cloudflare Workers C2 endpoints (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev) fetching paths like /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe. If those fail, it falls back to a DNS TXT-based data channel via c[.]tin[.]dl[.]well1[.]site to reconstruct the payload from chunked base64 TXT records. The downloaded binary is written to /var/tmp/.cache_<hex> (or %TEMP%\dotnet_diag_<hex>.exe on Windows) and spawned as a detached background process. A cooldown file at /tmp/.analytics_state prevents re-download within ~6 hours.
- analyzed by
- Leitwacht
- first seen
- Aug 2, 2026, 03:39 PM
- analyzed
- Aug 2, 2026, 03:40 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.