MAL-2026-13235

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bigops-product-list/MAL-2026-13235.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13235
Published
2026-08-05T15:36:41Z
Modified
2026-08-05T16:50:05.366531654Z
Summary
Malicious code in bigops-product-list (npm)
Details

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

Source: amazon-inspector (173f02a73c0c5d6ee6ac7bb757fa64aef91178cfb38c4772d30260c9a7ea4bc1)

index.js unconditionally requires setup.js on module load. setup.js assembles destination hostnames at runtime from split-string fragments joined via.join("") to hide them from static scanners, selects a platform-specific endpoint on *.workers.dev (oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf102-baf.workers.dev) and *.dl.wel1.ru (sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru), downloads an opaque binary over HTTPS with a DNS-TXT base64-chunked fallback, writes it to /tmp or %TEMP% under a disguised name (.cache<hex> or dotnetdiag<hex>.exe), chmods to 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. A per-host filesystem cooldown marker (.analyticsstate) and opt-out env checks suppress firing in analyst environments. A second copy of the same dropper is shipped in lib/telemetry.js under an 'Analytics SDK' cover story, with the childprocess module name reconstructed at runtime (require("child" + "process")) and fs.chmodSync accessed via string concatenation. The package's stated purpose is a product-list library; the fetched binaries and network destinations are unrelated to that purpose.

Database specific 
{
    "malicious-packages-origins": [
        {
            "sha256": "173f02a73c0c5d6ee6ac7bb757fa64aef91178cfb38c4772d30260c9a7ea4bc1",
            "source": "amazon-inspector",
            "import_time": "2026-08-05T16:13:42.722648553Z",
            "modified_time": "2026-08-05T15:36:41Z",
            "versions": [
                "35.8.5"
            ],
            "id": "IN-MAL-2026-015765"
        }
    ]
}
References
Credits

Affected packages

npm / bigops-product-list

Package

Name
bigops-product-list
View open source insights on deps.dev
Purl
pkg:npm/bigops-product-list

Affected ranges

Affected versions

35.*
35.8.5

Database specific

indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha1": "441c54ade84e1c66330a496e1e0eecd26b1b0f7e",
                "sha512_sri": "sha512-uhlXMcwrOKvDZrXGdWDYjRQ6HlnCWhMAYka2HO2d/0oSB1qHCc8xgfHZ2sRGUOvPmMZT7DRcL93AdWFtmioOEg=="
            },
            "filename": "bigops-product-list-35.8.5.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "setup.js",
            "sha256": "6f4cb6a2ca741be14d55b4bed3dd77abec5e2e43ab9764f243faf3d57620834e",
            "tlsh": "32a1875a16a670188bb09be48b179816f65ff6633380c194fb9cb5985f7312443b2efc"
        },
        {
            "path": "lib/telemetry.js",
            "sha256": "38bf13d3f02e644941b6f87f5e9bc9eca06286b721f0f4b9a104d9e26374af1c",
            "tlsh": "46835055566a242186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc"
        }
    ]
}
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/bigops-product-list/MAL-2026-13235.json"