LWA-2026-7477 MAL-2026-12252 ↗ confirmed malware

tinkoff-pwa-confac-types@20.7.7

Malicious code in tinkoff-pwa-confac-types (npm)

T1195.002 · Compromise Software Supply ChainT1059.007 · JavaScriptT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1568 · Dynamic ResolutionT1204.002 · Malicious File

Analysis

On require(), the package downloads a platform-specific binary payload from Cloudflare Workers C2 endpoints (oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev) via HTTPS GETs to /pkg/package (or platform variants). It writes the binary to /var/tmp/.cache_<hex> (Linux/macOS) or %TEMP%\dotnet_diag_<hex>.exe (Windows) and executes it as a detached background process. A DNS TXT-record-based fallback channel at c[.]tin[.]dl[.]well1[.]site (and platform-specific subdomains) provides an alternative payload delivery path. The package has no lifecycle hooks; the payload runs on module import via index.js requiring _adapter.js.

analyzed by
Leitwacht
first seen
Aug 2, 2026, 03:55 PM
analyzed
Aug 2, 2026, 03:56 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.