MAL-2026-13533

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/ded-pwa-c-boxy/MAL-2026-13533.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13533
Published
2026-08-07T12:30:15Z
Modified
2026-08-07T13:20:18.896223424Z
Summary
Malicious code in ded-pwa-c-boxy (npm)
Details

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

Source: amazon-inspector (b2293ad47611dcfbb22a3ef81df5e4f27dc942bd2bd2fc5865b60948dc6fc671)

On require() of the package, index.js loads vendor.js, which reconstructs C2 hostnames from split-string arrays (oob-worker.cf102-baf.workers.dev and sdk.dl.wel1.ru, with a DNS-TXT covert-channel fallback), fetches a platform-specific opaque binary over HTTPS, writes it to /var/tmp or %TEMP% under names disguised as system caches (.cache<hex> / dotnetdiag<hex>.exe), chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. The loader is invoked from index.js inside a try/catch that swallows all errors, gated on env variables DISABLETELEMETRY / ANALYTICSOPTOUT / DONOT_TRACK and a filesystem TTL marker to evade repeated analysis. The package.json declares the package as 'Reusable ded pwa c boxy components' with no dependencies and index.js exposes only a trivial DedPwaCBoxy class — the declared purpose is unrelated to any native-binary component. Destinations are anonymous Cloudflare Workers subdomains and a lookalike DNS namespace, not a publisher-owned or documented distribution host.

Database specific 
{
    "malicious-packages-origins": [
        {
            "versions": [
                "35.9.1"
            ],
            "import_time": "2026-08-07T12:51:21.939412748Z",
            "sha256": "b2293ad47611dcfbb22a3ef81df5e4f27dc942bd2bd2fc5865b60948dc6fc671",
            "modified_time": "2026-08-07T12:30:15Z",
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-017007"
        }
    ]
}
References
Credits

Affected packages

npm / ded-pwa-c-boxy

Package

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

Affected ranges

Affected versions

35.*
35.9.1

Database specific

cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files": [
        {
            "tlsh": "9aa1a65a16aa70188bb0d7e087175415f66af6633380c2d4fbac69840f7713883b2efc",
            "sha256": "2145e0fd6cae6ca763446dc8ed83fa260740b360126cc4e3514fd9f71e7b251e",
            "path": "_vendor.js"
        },
        {
            "path": "package.json",
            "sha256": "c5d5a6b08dda1d544bd4528bd9aa46ff21a7cc815ee358eea08a6568a26cd220",
            "tlsh": "2dc012264552776314b492901c715a4b37720f1fa0748c0e7277745c40d65b154ad363"
        }
    ],
    "package_integrity": [
        {
            "filename": "ded-pwa-c-boxy-35.9.1.tgz",
            "hashes": {
                "sha1": "3b397b1bafcff979e6ad5685747e41b0a927f97c",
                "sha512_sri": "sha512-c/f+1MZzS3VxMcFt9p8wSfmjB60ncGT/run7tAByHeqp2YNu8WX5Te9R9CKaSgQnvtAhU5uYOPhrZUWwWpRvfg=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/ded-pwa-c-boxy/MAL-2026-13533.json"