LWA-2026-10406 MAL-2026-12956 ↗ confirmed malware

bnpl-blocks-independent-bnpl-features@35.7.2

Malicious code in bnpl-blocks-independent-bnpl-features (npm)

T1059.007 · JavaScriptT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1102 · Web ServiceT1082 · System Information DiscoveryT1059 · Command and Scripting Interpreter

Analysis

On require, this package downloads a platform-specific binary from Cloudflare Workers endpoints (oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev, paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe) and from DNS TXT chunked-transfer hosts under dl[.]wel1[.]ru (c[.]sdk[.]dl[.]wel1[.]ru, sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, net[.]dl[.]wel1[.]ru). It writes the downloaded payload to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe on Windows), makes it executable, and launches it as a detached background process via /bin/sh -c "<path> &" or cmd.exe /c start /b. The package also ships an 81KB telemetry module that fingerprints the host (platform, arch, hostname, CPU count, memory) and collects environment/CI variables. This is a remote binary download-and-execute dropper that runs on import.

analyzed by
Leitwacht
first seen
Aug 5, 2026, 01:22 PM
analyzed
Aug 5, 2026, 04:07 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.