MAL-2026-12889

    Dashboard / Malicious Package / MAL-2026-12889

    MAL-2026-12889

    Published: 5 Aug 2026Last Modified: 5 Aug 2026

    Summary: Malicious code in bnpl-blocks-atom-bnpl-range (npm)

    Details: Source: amazon-inspector (0d1d5c6a3a1bb7d8a26a77aada7abbec439922ebceec32b8608909ad2ee8acac) On require of index.js, _shim.js executes immediately and fetches an opaque binary from one of three string-concatenation-obfuscated origins (oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev) with a DNS TXT fallback under *.dl.wel1.ru. The fetched bytes are written to /tmp/.cache_<hex> on Unix or %TEMP%\dotnet_diag_<uid>.exe on Windows, chmod 0755, and spawned detached via /bin/sh -c or cmd. No hash or signature verification is performed. Hostnames, the DNS resolver domain, and the child_process module name are assembled at runtime via array-join concatenation to evade static analysis. The package name/version, masqueraded staging filename (dotnet_diag), dotfile staging path, and covert DNS-TXT fallback channel are consistent with a targeted supply-chain dropper.

    References: https://www.npmjs.com/package/bnpl-blocks-atom-bnpl-range/v/35.6.6

    Affected packages

    Package

    Name: bnpl-blocks-atom-bnpl-range

    Purl: pkg:npm/bnpl-blocks-atom-bnpl-range

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    35.6.6
    MAL-2026-12889 | CVE-DB