MAL-2026-13011

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-mobile-large-bnpl-reviews/MAL-2026-13011.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13011
Published
2026-08-05T14:36:23Z
Modified
2026-08-05T15:51:41.016527731Z
Summary
Malicious code in bnpl-blocks-mobile-large-bnpl-reviews (npm)
Details

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

Source: amazon-inspector (f4fb3bbd6df612646af310ca9ec9e4d53cdeed9298b7e3e7c0460439b92d2955)

On require() of this package, loader.js selects a platform-specific asset path (/pkg/package, /pkg/package-arm64, /pkg/loadermac, /pkg/package.exe), downloads it over HTTPS from attacker-controlled hosts whose hostnames are reconstructed via split-and-join string obfuscation (oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev), with a covert DNS TXT base64 fallback channel to sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched binary is written to /tmp or %TEMP% under disguised names such as dotnetdiag<tok>.exe or.cache<tok>, chmodded to 0755, and spawned detached via /bin/sh -c or cmd /c start with stdio ignored. There is no signature or hash verification, and the require() of childprocess is itself obfuscated (require("child_" + "process")). Cover-story opt-out env vars and analytics/dotnet_diag filenames provide plausible-deniability framing.

Database specific 
{
    "malicious-packages-origins": [
        {
            "versions": [
                "35.8.2"
            ],
            "id": "IN-MAL-2026-015367",
            "import_time": "2026-08-05T15:19:47.339676291Z",
            "modified_time": "2026-08-05T14:36:23Z",
            "source": "amazon-inspector",
            "sha256": "f4fb3bbd6df612646af310ca9ec9e4d53cdeed9298b7e3e7c0460439b92d2955"
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-mobile-large-bnpl-reviews

Package

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

Affected ranges

Affected versions

35.*
35.8.2

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
indicators 
{
    "package_integrity": [
        {
            "filename": "bnpl-blocks-mobile-large-bnpl-reviews-35.8.2.tgz",
            "hashes": {
                "sha512_sri": "sha512-qAiBatPN/TAaZOOU37QPaX/psIGKKBDACq+yq8Nus4yMs8RCy1K0TDHxKPYDr+wlvLQrTNwWWA1Wuh0PMlvVKg==",
                "sha1": "0fc3a36012b8eafb4c490660da7cab4eae57cbfc"
            }
        }
    ],
    "evidence_files": [
        {
            "path": "_loader.js",
            "tlsh": "fda1975a12aa30158bb09be5c7174416f65ae6a33780c2c4fb5ca9944f77128c3b2efc",
            "sha256": "3f151bd71c4f4d8030846bf3299598ea465e3eab15e6bf215c39919469229672"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-mobile-large-bnpl-reviews/MAL-2026-13011.json"