MAL-2026-12564

    Dashboard / Malicious Package / MAL-2026-12564

    MAL-2026-12564

    Published: 5 Aug 2026Last Modified: 5 Aug 2026

    Summary: Malicious code in checkout-get-installment-client-agreement-am (npm)

    Details: Source: amazon-inspector (b6c89ae5bb381502715feea1642012fc1c9b388a46746b357a6d8f1348e876c9) On require() of the package, _init.js detects the host OS and architecture, assembles Cloudflare Workers hostnames from split string fragments (e.g. oob-worker.cf101-adf.workers.dev, oob-worker.cf99-9b3.workers.dev) with a DNS TXT fallback via *.dl.wel1.ru, downloads a platform-specific binary payload, writes it to /var/tmp or %TEMP% under disguised names (dotnet_diag_<hex>.exe on Windows,.cache_<hex> on Unix), chmods 0755, and spawns it detached via /bin/sh or cmd.exe. No signature or hash verification is performed. Comments describing the code as telemetry/analytics and referencing opt-out env vars are inconsistent with the disguised filenames, string-split host obfuscation, and DNS-TXT loader fallback. The dropper fires unconditionally on module load.

    References: https://www.npmjs.com/package/checkout-get-installment-client-agreement-am/v/35.1.4

    Affected packages

    Package

    Name: checkout-get-installment-client-agreement-am

    Purl: pkg:npm/checkout-get-installment-client-agreement-am

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    35.1.4
    MAL-2026-12564 | CVE-DB