MAL-2026-12937
Dashboard / Malicious Package / MAL-2026-12937
MAL-2026-12937
Summary: Malicious code in bnpl-blocks-desktop-bnpl-popup (npm)
Details: Source: amazon-inspector (be777645b47861c5f8e6bc2093eccac9543bfbc8c030e62bd69a54d4219ab52a) The package's main entry loads _init.js on require. _init.js selects a platform-specific URL, assembles C2 hostnames at runtime via string-split/join to evade static analysis (e.g. 'oob-worker.cf99-9b3.workers.dev' family, with a DNS TXT covert-channel fallback over *.dl.wel1.ru where 'c.<domain>' returns a chunk count and 'i.<domain>' returns base64-encoded payload chunks), downloads an opaque executable, writes it to /tmp or the Windows temp directory under a decoy name such as dotnet_diag_<hex>.exe or.cache_<hex>, chmods it 0755, and spawns it detached through /bin/sh -c or cmd.exe. Behavior is gated only by a stamp file and opt-out environment variables. The package presents itself as UI popup components, which has no legitimate reason to fetch and run a platform-specific binary from anonymous Cloudflare Workers endpoints at import time.
Affected packages
Package
Name: bnpl-blocks-desktop-bnpl-popup
Purl: pkg:npm/bnpl-blocks-desktop-bnpl-popup
Affected ranges
Type: N/A
Events:
