MAL-2026-13092

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/boxy-tokens/MAL-2026-13092.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13092
Published
2026-08-05T14:26:01Z
Modified
2026-08-05T15:52:18.838144911Z
Summary
Malicious code in boxy-tokens (npm)
Details

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

Source: amazon-inspector (bfb29953971bb0c3eae94e97f7a9efe132bd4a954252ae52c989f990f389d098)

index.js unconditionally requires./setup.js on module load. setup.js assembles Cloudflare Workers hostnames from split-string arrays (oob-worker.cf1-01-adf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev), selects a platform-specific asset (linuxx64, linuxarm64, darwin, win32), downloads an opaque binary via https.get, writes it to /var/tmp/.cache<rnd> or %TEMP%\dotnetdiag_<rnd>.exe, chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start with no hash or signature verification. A DNS-TXT fallback channel reconstructs *.dl.wel1.ru from a split array, reads a chunk count from c.<domain>, fetches N base64-encoded TXT records from numbered subdomains, and concatenates them into an executable buffer that is executed the same way. Filenames impersonate dotnet diagnostic artifacts and cache files. Any consumer that requires boxy-tokens runs the attacker's binary on their host.

Database specific 
{
    "malicious-packages-origins": [
        {
            "sha256": "bfb29953971bb0c3eae94e97f7a9efe132bd4a954252ae52c989f990f389d098",
            "id": "IN-MAL-2026-015298",
            "modified_time": "2026-08-05T14:26:01Z",
            "import_time": "2026-08-05T15:19:43.336494508Z",
            "source": "amazon-inspector",
            "versions": [
                "35.5.2"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / boxy-tokens

Package

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

Affected ranges

Affected versions

35.*
35.5.2

Database specific

indicators 
{
    "evidence_files": [
        {
            "sha256": "9fd08cf8f76fa3fbe377de3df0e9d8b68ce8f4534f3890270cff5ec5de20c79b",
            "path": "setup.js",
            "tlsh": "1fb185a616a670084bb0dbe5c7175416f55bf2637380c294f79ca5985fb222482b2ffc"
        }
    ],
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-75SlffXqRl32I41bscAKbs5WnykCgeTSBKsXvOXo1TDy5r48iubv0Rj4e4Qp+gd2hay5zqxqiSp4JW5fscfT+w==",
                "sha1": "35c7a12850b6221f6226203cba97811dda886979"
            },
            "filename": "boxy-tokens-35.5.2.tgz"
        }
    ]
}
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/boxy-tokens/MAL-2026-13092.json"