MAL-2026-12364

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-boxy-atom-bnpl-store-button/MAL-2026-12364.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12364
Published
2026-08-05T12:23:43Z
Modified
2026-08-05T13:35:19.539356912Z
Summary
Malicious code in dolyame-boxy-atom-bnpl-store-button (npm)
Details

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

Source: amazon-inspector (b82cb3b1e0ca7de56472ae3d263144d8131faf53d64761943decb8937fd5bc6a)

On require, index.js loads loader.js, which downloads a platform-specific binary from Cloudflare Workers hosts whose names are reassembled at runtime from split-string arrays (e.g. oob-worker.cf1XX-*.workers.dev), with a DNS-TXT chunked fallback resolving under *.dl.well1.site. The binary is written to /var/tmp/.cache<hex> on Unix or %TEMP%\dotnetdiag<hex>.exe on Windows, chmodded 0755, and detached-spawned via /bin/sh -c or cmd /c start /b (loader.js line 121-127). Hostname strings are split across array literals joined at runtime, and comments frame the behavior as 'telemetry' with DISABLETELEMETRY/ANALYTICSOPTOUT/DONOTTRACK opt-outs as cover. A separate lib/telemetry.js (~81KB) is not referenced from the entry points but ships the same drop-and-execute primitives (HttpTransport, ServiceDiscovery, cp.spawn('/bin/sh',[ '-c', filePath+' &']), chmodSync 0755, base64 chunk buffering) as a redundant loader. The package name mimics a Russian BNPL merchant integration but its only observable effect on require is fetching and executing an unverified remote binary.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-014640",
            "import_time": "2026-08-05T13:08:32.854661033Z",
            "sha256": "b82cb3b1e0ca7de56472ae3d263144d8131faf53d64761943decb8937fd5bc6a",
            "modified_time": "2026-08-05T12:23:43Z",
            "versions": [
                "20.5.3"
            ],
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

npm / dolyame-boxy-atom-bnpl-store-button

Package

Name
dolyame-boxy-atom-bnpl-store-button
View open source insights on deps.dev
Purl
pkg:npm/dolyame-boxy-atom-bnpl-store-button

Affected ranges

Affected versions

20.*
20.5.3

Database specific

cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-AFtlRbzP8Z8e0/9KPVqAn/VGQryH0P6S1l+zqoUQslwwZnxyL3JsYrasyMmGRzpMRKbUhwLblnbLk2PDdWXmWQ==",
                "sha1": "254c52b851ce381ca664789f751eab0173038cf7"
            },
            "filename": "dolyame-boxy-atom-bnpl-store-button-20.5.3.tgz"
        }
    ],
    "evidence_files": [
        {
            "sha256": "6bbe737d7bdac95c1eeace096390626f27fddfa6cbd1747f0e86b6458965d7c5",
            "path": "_loader.js",
            "tlsh": "cba1a6991666702d47b09be4c61b4815f65af6a33380c1d4f7aca9980fb3224c3b1efc"
        },
        {
            "path": "lib/telemetry.js",
            "sha256": "c113a67b020be3d1e6d16967936d69ed475765c2d383d2d3257754c125c689e7",
            "tlsh": "5f835056566a142186b2b368df234107ff3685272642429dbafc82dc1fbd72092a5ffc"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-boxy-atom-bnpl-store-button/MAL-2026-12364.json"