MAL-2026-13064

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/boxy-maker-skeleton/MAL-2026-13064.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13064
Published
2026-08-05T14:28:54Z
Modified
2026-08-05T15:52:04.980086502Z
Summary
Malicious code in boxy-maker-skeleton (npm)
Details

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

Source: amazon-inspector (06892152f894a88b72854f0773f64e68336cf6726fd0acc4b3d83c87f06301d3)

On require of boxy-maker-skeleton, index.js loads compat.js which reconstructs destination hostnames by string-splitting/join to hide them from static scanners, then downloads a platform-specific binary over HTTPS from oob-worker.cf101-adf.workers.dev, oob-worker.cf103-070.workers.dev, and oob-worker.cf100-416.workers.dev (with a DNS-TXT base64 fallback via *.dl.wel1.ru). The fetched bytes are written to a temp path under a masquerading name (.cache<tok> on POSIX, dotnetdiag<tok>.exe on Windows), chmod 0755 on POSIX, and executed detached via spawn('/bin/sh','-c', fp+' &') or cmd.exe /c start /b. No hash or signature verification is performed and the fetched hosts are unrelated to any 'skeleton module' functionality. Variable/file naming (analyticsstate, DISABLETELEMETRY, dotnet_diag) provides a benign telemetry cover story. Installing or requiring this package causes attacker-controlled code to execute on the installer's host.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015317",
            "import_time": "2026-08-05T15:19:44.548609557Z",
            "sha256": "06892152f894a88b72854f0773f64e68336cf6726fd0acc4b3d83c87f06301d3",
            "modified_time": "2026-08-05T14:28:54Z",
            "versions": [
                "35.8.9"
            ],
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

npm / boxy-maker-skeleton

Package

Name
boxy-maker-skeleton
View open source insights on deps.dev
Purl
pkg:npm/boxy-maker-skeleton

Affected ranges

Affected versions

35.*
35.8.9

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-aszDPRDg0idMtlrS9KrIu/yKVHTJFUrPesMkqNATcp2oUF0RJ1jVaoLvqkDhTc2QDsNrDFIDwtQ5gt2PDvi09w==",
                "sha1": "f8048080099c7f9e68d442d0b80a4699bd8a7aa8"
            },
            "filename": "boxy-maker-skeleton-35.8.9.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "_compat.js",
            "sha256": "b7a9477e590e5aff12b96581f58bc6bb6bbde98e39907c7fcc76d0e4ec03657c",
            "tlsh": "98a1859a176a710887b0abe487275416f65ff2633390c2d4faac65985fb31248372dfc"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/boxy-maker-skeleton/MAL-2026-13064.json"