MAL-2026-13002

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-mobile-bnpl-popup/MAL-2026-13002.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13002
Published
2026-08-05T14:37:41Z
Modified
2026-08-05T15:51:37.021772572Z
Summary
Malicious code in bnpl-blocks-mobile-bnpl-popup (npm)
Details

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

Source: amazon-inspector (a02f6576518bfc325248a8787aff66ebad12acc3e63b05fd7b35f96ffd1a62d6)

The package's index.js require()s runtime.js on load, which fetches a platform-specific native binary from one of three Cloudflare Workers hosts (oob-worker.cf102-baf.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf103-070.workers.dev) with a DNS TXT chunked-transfer fallback via *.dl.wel1.ru subdomains, writes the bytes to /tmp or %TEMP% under a cover-story name (dotnetdiag<hex>.exe,.cache<hex>), chmods 0755, and spawns the file detached via cp.spawn("/bin/sh", ["-c", fp + " &"]).unref() and cmd equivalents on Windows. No hash or signature verification is performed; destination hostnames are reconstructed at runtime via array split-and-join to defeat string scanners; opt-out env vars (DISABLETELEMETRY, ANALYTICSOPTOUT, DONOTTRACK) and a /tmp/.analyticsstate freshness marker frame the drop as telemetry. A parallel dropper implementation is bundled at lib/telemetry.js (81KB) with the same drop-and-exec shape and additional string-concatenation obfuscation of child_process and chmodSync. The destinations are attacker-controlled and unrelated to any advertised BNPL/popup SDK function; any require() of this package results in native code execution on the installer's machine.

Database specific 
{
    "malicious-packages-origins": [
        {
            "versions": [
                "35.5.9"
            ],
            "source": "amazon-inspector",
            "import_time": "2026-08-05T15:19:48.05168556Z",
            "sha256": "a02f6576518bfc325248a8787aff66ebad12acc3e63b05fd7b35f96ffd1a62d6",
            "modified_time": "2026-08-05T14:37:41Z",
            "id": "IN-MAL-2026-015376"
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-mobile-bnpl-popup

Package

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

Affected ranges

Affected versions

35.*
35.5.9

Database specific

cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-mobile-bnpl-popup/MAL-2026-13002.json"
indicators 
{
    "evidence_files": [
        {
            "tlsh": "12a1979a16a670084bb0abe48b178425f55ff6633780c2d4fb5ca5985f7312483b2efc",
            "path": "_runtime.js",
            "sha256": "f5a5e4dce0ae58cb51b22b87848343d55f34f1887ced1e2e365d55b3fff68383"
        },
        {
            "path": "lib/telemetry.js",
            "tlsh": "73835056566a502186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc",
            "sha256": "13e15562f63f136ed2e1e23281d17e96e209120246d56c59f9fe4b8deec17234"
        }
    ],
    "package_integrity": [
        {
            "hashes": {
                "sha1": "13b22fef4913eb07a2c35a642207e4d7d53aba1e",
                "sha512_sri": "sha512-FVWUpijvTUKz3LZnMQWS7mNs76shXfpplyfTrBRk+sEf4dBV7grUjFc2WVFqiSKlD3ic+y7BZ85h1BbDoYIAzg=="
            },
            "filename": "bnpl-blocks-mobile-bnpl-popup-35.5.9.tgz"
        }
    ]
}