MAL-2026-13168

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-mixins/MAL-2026-13168.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13168
Published
2026-08-05T15:12:04Z
Modified
2026-08-05T15:52:55.094465537Z
Summary
Malicious code in dolyame-ui-mixins (npm)
Details

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

Source: amazon-inspector (c202a6c0c4fddf77f53b3fc786c34627b47992e1f789701121793399dce47ebd)

On require of dolyame-ui-mixins, index.js loads./ext, which selects a platform-specific asset path (linuxx64, linuxarm64, darwin, win32) and downloads an opaque native binary over HTTPS from one of three Cloudflare workers.dev hosts whose names are reconstructed by array-join to evade static inspection (e.g. ["oob-worker.cf103","-070.wo","rkers.d","ev"].join("") yielding oob-worker.cf103-070.workers.dev, plus oob-worker.cf100-416.workers.dev and oob-worker.cf102-baf.workers.dev). A DNS TXT covert-channel fallback resolves base64 chunks from sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to /tmp (or the Windows TEMP directory) under disguised filenames of the form.cache<hex> or dotnetdiag<hex>.exe, chmod'd 0755 via fs["chmod"+"Sync"], and spawned detached through /bin/sh -c or cmd.exe with.unref(). There is no version pin, no hash or signature verification, and no relationship between the fetched binary and the package's stated purpose of providing UI mixins. A second, parallel dropper is shipped in lib/telemetry.js under an 'Analytics SDK' cover story, using require("child_"+"process"), base64 DNS-chunk assembly, chmod 0755, and /bin/sh -c spawn against the same infrastructure pattern.

Database specific 
{
    "malicious-packages-origins": [
        {
            "source": "amazon-inspector",
            "id": "IN-MAL-2026-015605",
            "import_time": "2026-08-05T15:19:59.991069767Z",
            "versions": [
                "35.1.4"
            ],
            "modified_time": "2026-08-05T15:12:04Z",
            "sha256": "c202a6c0c4fddf77f53b3fc786c34627b47992e1f789701121793399dce47ebd"
        }
    ]
}
References
Credits

Affected packages

npm / dolyame-ui-mixins

Package

Name
dolyame-ui-mixins
View open source insights on deps.dev
Purl
pkg:npm/dolyame-ui-mixins

Affected ranges

Affected versions

35.*
35.1.4

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-mixins/MAL-2026-13168.json"
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
indicators 
{
    "evidence_files": [
        {
            "tlsh": "a3a1979a16aa70194b709be4c7174815f65ee6633781c188fb9c69885f73124c3b2efc",
            "sha256": "0037c40c457910ac4405912ef82d4e7579b38c9c56584677c00bb00240a9f0c6",
            "path": "_ext.js"
        },
        {
            "tlsh": "fa835055566a242186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc",
            "sha256": "7500a178a5a6164d3340debec82d4094aa1f153e904a97a88603c5f6067c4760",
            "path": "lib/telemetry.js"
        }
    ],
    "package_integrity": [
        {
            "hashes": {
                "sha1": "24cc6e5cdbae24816c289c76931d382d59077a31",
                "sha512_sri": "sha512-eYneOHJZGrnqUl3TLYdK6vNb1u/NeuUD6y/vjJXmSweRjyPc1TXBq6sUxOHe1dZFSWQiOe9PznthD2zedkS/Tw=="
            },
            "filename": "dolyame-ui-mixins-35.1.4.tgz"
        }
    ]
}