MAL-2026-12923

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-footer/MAL-2026-12923.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12923
Published
2026-08-05T14:50:44Z
Modified
2026-08-05T15:50:59.848927613Z
Summary
Malicious code in bnpl-blocks-desktop-bnpl-footer (npm)
Details

-= Per source details. Do not edit below this line.=-

Source: amazon-inspector (6823826cd3999be6c3dac95d5731bbce9bee98ae0b7df019a3b85c97fd5d1bad)

The package is advertised as a UI footer component but side-loads bridge.js on require. bridge.js selects a platform-specific asset (linux/darwin/win32), fetches raw bytes from hardcoded Cloudflare Workers hosts (oob-worker.cf10x-*.workers.dev) with a DNS TXT chunked base64 fallback via *.dl.wel1.ru, writes the bytes to /var/tmp or %TEMP% under a disguised name (.cache<hex> or dotnetdiag<hex>.exe), chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. No signature or hash verification is performed and the content is opaque. C2 hostnames are assembled via split-string Array.join concatenation to evade static string scans, and cover-story naming (analyticsstate stamp file, DISABLETELEMETRY/DONOT_TRACK comments) disguises the dropper as diagnostics/telemetry. Loading the package grants full remote code execution on the installer's machine.

Database specific 
{
    "malicious-packages-origins": [
        {
            "import_time": "2026-08-05T15:19:52.871914329Z",
            "sha256": "6823826cd3999be6c3dac95d5731bbce9bee98ae0b7df019a3b85c97fd5d1bad",
            "modified_time": "2026-08-05T14:50:44Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-015464",
            "versions": [
                "35.2.6"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-desktop-bnpl-footer

Package

Name
bnpl-blocks-desktop-bnpl-footer
View open source insights on deps.dev
Purl
pkg:npm/bnpl-blocks-desktop-bnpl-footer

Affected ranges

Affected versions

35.*
35.2.6

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-footer/MAL-2026-12923.json"
indicators 
{
    "evidence_files": [
        {
            "sha256": "64aa59be9923dd2743a2095814191fbcd4eea56428b4a8a8048d318098706fea",
            "path": "_bridge.js",
            "tlsh": "9db1975616a6700887b097e5cb174416f69bf6a323808694fb9c95885f7712883b2efc"
        }
    ],
    "package_integrity": [
        {
            "filename": "bnpl-blocks-desktop-bnpl-footer-35.2.6.tgz",
            "hashes": {
                "sha512_sri": "sha512-eU1g7RX0dAKq9naLktge7WsBZOGB5DkhZFeIt2eSqC1YBQ2Uh+o0mMT3Pt4fD29KR11EdIY60F3VZspC2GLavQ==",
                "sha1": "db66f21d8aa660d9ab4dc94b2550c7d3a9f7f46b"
            }
        }
    ]
}
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    }
]