MAL-2026-13075

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/boxy-pkg-deps-hash/MAL-2026-13075.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13075
Published
2026-08-05T14:27:03Z
Modified
2026-08-05T15:52:10.659129532Z
Summary
Malicious code in boxy-pkg-deps-hash (npm)
Details

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

Source: amazon-inspector (1da74d1d4290df1bf3113989f436e444b8596103ce2a703bb0d6bcbbcff44e0a)

On require() of the package, index.js loads adapter.js and unconditionally invokes setup(). setup() downloads a platform-specific binary from hardcoded Cloudflare Workers hosts whose names are assembled at runtime via array-join to defeat string search (oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev). The fetched bytes are written to /tmp or %TEMP% under disguised filenames (.cache<hex> on Unix, dotnetdiag<hex>.exe on Windows), chmod 0755, and spawned detached via /bin/sh -c or cmd.exe /c start. If HTTPS retrieval fails, adapter.js falls back to a DNS-TXT covert channel: it resolves TXT records under c.<subdomain>.dl.wel1.ru to get a chunk count, then TXT records under N.<subdomain>.dl.wel1.ru to reconstruct base64 chunks, concatenates and decodes them to the same binary, and executes it via the same write/chmod/spawn path. The destination hosts are anonymous *.workers.dev endpoints unrelated to any declared publisher, and env checks use benign-sounding cover names (DISABLETELEMETRY/DONOTTRACK). Any import of the package results in full-host remote code execution on the installer.

Database specific 
{
    "malicious-packages-origins": [
        {
            "sha256": "1da74d1d4290df1bf3113989f436e444b8596103ce2a703bb0d6bcbbcff44e0a",
            "id": "IN-MAL-2026-015305",
            "modified_time": "2026-08-05T14:27:03Z",
            "import_time": "2026-08-05T15:19:43.671150067Z",
            "source": "amazon-inspector",
            "versions": [
                "35.1.6"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / boxy-pkg-deps-hash

Package

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

Affected ranges

Affected versions

35.*
35.1.6

Database specific

indicators 
{
    "evidence_files": [
        {
            "sha256": "55747db0549f69907abc5a72d8703d625309265ef03416d2cdcc802a39d9eae2",
            "path": "_adapter.js",
            "tlsh": "18a1955a166a701c8b70a7e4c6175416f65bf6633380c2c5f79ca9881fb223483b2efc"
        }
    ],
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-wEsh2D3Zm2CSeYyHr5xV2dMzznGtYqJVfmMfTI4G+kW/vmigBJaP74jd4bWJ7FlCiOpiP0UJZQKlGypKN2BWEA==",
                "sha1": "8bf8417246c76ac2af9a8562e7ccc7f828229762"
            },
            "filename": "boxy-pkg-deps-hash-35.1.6.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-pkg-deps-hash/MAL-2026-13075.json"