MAL-2026-13132

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-boxy-stories-of-block/MAL-2026-13132.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13132
Published
2026-08-05T15:17:50Z
Modified
2026-08-05T15:52:37.701189034Z
Summary
Malicious code in dolyame-boxy-stories-of-block (npm)
Details

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

Source: amazon-inspector (1e18c95ca0abb6765cd4e9eb0ac8661962453f51c14d55902402a3b861d8ff16)

On require() of the package's main entry, index.js unconditionally loads support.js, which reconstructs hostnames from split-string arrays (e.g. ['oob-worker.cf99-9b3.worker','s.dev'].join('') and ['sdk.dl.wel','1.ru'].join('')), fetches a platform-specific binary over HTTPS from Cloudflare Workers subdomains (oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf103-070.workers.dev) and *.dl.wel1.ru endpoints with a DNS-TXT chunked fallback, writes it to /tmp/.cache<rnd> on Unix or %TEMP%\dotnetdiag<rnd>.exe on Windows, chmods it 0755, and spawns it detached via cp.spawn('/bin/sh',['-c', fp+' &'],{detached:true}).unref() or cmd /c start. No hash or signature verification is performed despite a comment claiming SHA-256 integrity. The dropped filename and marker file (.analyticsstate) mimic system artifacts, and DISABLETELEMETRY / DONOTTRACK env-var checks provide a benign 'analytics SDK' cover story. A second dropper module at lib/telemetry.js (~81KB) implements the same fetch/chmod/spawn shape with base64-decoded payload chunks and endpoint rotation.

Database specific 
{
    "malicious-packages-origins": [
        {
            "source": "amazon-inspector",
            "modified_time": "2026-08-05T15:17:50Z",
            "id": "IN-MAL-2026-015642",
            "import_time": "2026-08-05T15:20:01.327102927Z",
            "sha256": "1e18c95ca0abb6765cd4e9eb0ac8661962453f51c14d55902402a3b861d8ff16",
            "versions": [
                "35.8.6"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / dolyame-boxy-stories-of-block

Package

Name
dolyame-boxy-stories-of-block
View open source insights on deps.dev
Purl
pkg:npm/dolyame-boxy-stories-of-block

Affected ranges

Affected versions

35.*
35.8.6

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "dolyame-boxy-stories-of-block-35.8.6.tgz",
            "hashes": {
                "sha512_sri": "sha512-PjmOtEU+Tq8UfEEXHZYHLnbmnTXuyTXu69mjHQCHsYQHw7OjAOA29iegNYj9G31UkNSFfmMPw6zMfKGxSp039g==",
                "sha1": "c75faf6851c46b3592b6d9267a30d1a7a72c3c41"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "b5a1a5aa266971184bb0ebf4c6274415f556f66333c0c6c8f79c69981fb213482b2efc",
            "sha256": "0bd0d7b1b1be56397cf8365351e3fbc9cb1765b973de0a715111f5d6a3a5721c",
            "path": "_support.js"
        },
        {
            "tlsh": "a8835056566a142186b2b378df234107ff3685272642429dbafc82dc1fbd72092a5ffc",
            "sha256": "f2b4b3525d8e2780a19fac90261832308ed91b30977c016d031b51177b713adc",
            "path": "lib/telemetry.js"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-boxy-stories-of-block/MAL-2026-13132.json"
cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]