MAL-2026-13158

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-group/MAL-2026-13158.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13158
Published
2026-08-05T15:13:53Z
Modified
2026-08-05T15:52:50.853303786Z
Summary
Malicious code in dolyame-ui-group (npm)
Details

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

Source: amazon-inspector (714598919807b4143a734772e690ff94aa986fb6cf61bd99026e7f7bc93f4cf2)

On require() of the package's main entry, loader.js runs a platform-detecting downloader that fetches an executable from obfuscated hostnames reconstructed at runtime via array-join splits (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf102-baf.workers.dev), with a DNS-TXT covert-channel fallback to sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru. The downloaded bytes are written to a temp path with cover-story names (dotnetdiag<rand>.exe on Windows,.cache<rand> on POSIX), chmod 0755, and spawned detached via /bin/sh -c or cmd. A second co-shipped dropper module lib/telemetry.js, styled as an analytics SDK, contains the same base64-decode -> write -> chmod 755 -> spawn("/bin/sh", ["-c", filePath+" &"]) chain. Sensitive API names are hidden via string concatenation (require("child_"+"process"), fs["chmod"+"Sync"], os"host"+"name") to defeat static grep. Fetch-and-execute of an opaque, unversioned, non-publisher binary from anonymous workers.dev infrastructure at library-load time is arbitrary code execution on the installer's host.

Database specific 
{
    "malicious-packages-origins": [
        {
            "source": "amazon-inspector",
            "modified_time": "2026-08-05T15:13:53Z",
            "sha256": "714598919807b4143a734772e690ff94aa986fb6cf61bd99026e7f7bc93f4cf2",
            "import_time": "2026-08-05T15:20:00.393545722Z",
            "id": "IN-MAL-2026-015617",
            "versions": [
                "35.9.7"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / dolyame-ui-group

Package

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

Affected ranges

Affected versions

35.*
35.9.7

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "dolyame-ui-group-35.9.7.tgz",
            "hashes": {
                "sha512_sri": "sha512-rz+3EcIa8O7RyZmYGu/s9wOpwSxXrAYM498t3oNd9uIrNononZkz5usmDuB050Jmj9abPqjp5LEfUKnVK2mnZA==",
                "sha1": "20754c9cd124bd68d94888a92822a178bc6200da"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "c3b1755a127a70184bb0abe4871b5416f65bf6633780c2d8f79ca5985f7312482b2efc",
            "sha256": "04ce4f8e201d3f8a5cde4091830a9481381e74eeaf758ccc00188dde9c37d26f",
            "path": "_loader.js"
        },
        {
            "tlsh": "dd835055566a242186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc",
            "sha256": "646b7a587a343cb027b81f02e864a9dfbdbfa152fa41a37a57e5c53e0bdf1e49",
            "path": "lib/telemetry.js"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-group/MAL-2026-13158.json"
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]