LWA-2026-7434 MAL-2026-12173 ↗ confirmed malware

bnpl-blocks-desktop-bnpl-documents@20.7.2

Malicious code in bnpl-blocks-desktop-bnpl-documents (npm)

T1195.002 · Compromise Software Supply ChainT1059.007 · JavaScriptT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1573 · Encrypted ChannelT1041 · Exfiltration Over C2 ChannelT1082 · System Information Discovery

Analysis

On require(), the package executes setup.js which fingerprints the host platform and architecture, then downloads a binary payload from Cloudflare Workers C2 endpoints (oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev) over HTTPS, with a DNS TXT-based fallback channel via c[.]tin[.]dl[.]well1[.]site. The downloaded binary is written to /tmp/.cache_<hex> (Linux/macOS) or %TEMP%\dotnet_diag_<hex>.exe (Windows) and spawned as a detached background process. A stamp file at /tmp/.analytics_state or %TEMP%\analytics_state prevents re-downloading within approximately 6 hours.

analyzed by
Leitwacht
first seen
Aug 2, 2026, 03:14 PM
analyzed
Aug 2, 2026, 03:15 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.