LWA-2026-10699 MAL-2026-13532 ↗ confirmed malware

ded-pwa-bnpl-forms-test-demo@35.7.8

Malicious code in ded-pwa-bnpl-forms-test-demo (npm)

T1059.007 · JavaScriptT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1082 · System Information DiscoveryT1059 · Command and Scripting Interpreter

Analysis

On require, the package downloads and executes a second-stage binary. It fingerprints the OS/architecture and fetches a platform-specific payload over HTTPS from oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, and oob-worker[.]cf103-070[.]workers[.]dev at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, and /pkg/package.exe, with a DNS-TXT base64 fallback channel via the *.dl[.]wel1[.]ru domain family (c[.]sdk[.]dl[.]wel1[.]ru, sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, net[.]dl[.]wel1[.]ru). The downloaded payload is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe under the Windows temp dir), made executable, and launched as a detached background process (cmd.exe /c start /b on Windows, /bin/sh -c '... &' on Unix).

analyzed by
Leitwacht
first seen
Aug 7, 2026, 07:13 AM
analyzed
Aug 7, 2026, 07:14 AM

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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.