MAL-2026-13167

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-menu/MAL-2026-13167.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13167
Published
2026-08-05T15:12:28Z
Modified
2026-08-05T15:52:54.736585388Z
Summary
Malicious code in dolyame-ui-menu (npm)
Details

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

Source: amazon-inspector (cecad37efa23b83ead95d73e1b0ef07dbb8473dfd76645f4ceed5cf7939653f4)

The package is published as a React UI component library but on require('dolyame-ui-menu'), index.js loads polyfill.js which fetches a platform-specific native binary from attacker-controlled Cloudflare Workers hosts (oob-worker.cf99-9b3.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev) with a DNS-TXT chunked-base64 fallback channel over c./0./1./... subdomains of sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. All destination hostnames are assembled at runtime via array.join to defeat static string matching. The fetched bytes are written to a disguised path in /tmp or %TEMP% using cover-story names such as.cache<uid>, dotnetdiag<uid>.exe, and a.analyticsstate marker file, chmod'd 0755, and executed detached via spawn('/bin/sh', ['-c', fp + ' &']) or cmd.exe /c start /b, with no hash or signature verification. Execution is gated by DISABLETELEMETRY / ANALYTICSOPTOUT / DONOTTRACK env vars and a filesystem TTL marker to avoid re-running in analysis environments. The advertised UI-library purpose is unrelated to any of this behavior.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-05T15:12:28Z",
            "source": "amazon-inspector",
            "sha256": "cecad37efa23b83ead95d73e1b0ef07dbb8473dfd76645f4ceed5cf7939653f4",
            "import_time": "2026-08-05T15:20:00.061744217Z",
            "id": "IN-MAL-2026-015607",
            "versions": [
                "35.6.1"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / dolyame-ui-menu

Package

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

Affected ranges

Affected versions

35.*
35.6.1

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-menu/MAL-2026-13167.json"
indicators 
{
    "package_integrity": [
        {
            "filename": "dolyame-ui-menu-35.6.1.tgz",
            "hashes": {
                "sha512_sri": "sha512-nQgsUCzllBfiHeR8ays+XMSc4zjOvtso5yY0Sy3yGlp0y+KvBMHQcor6UkoAbiH/qaUY86WguUtRp2QHSHCsrw==",
                "sha1": "d7a399ce3c54b4bd8dd314b5f313f0601a06eb77"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "eba1a65a126a70084b70dbe4cb174416f65bf6633780c689fb9c69981f7212483b2efc",
            "sha256": "aba749ad09e63adf71131b3704617ab455b42a95770d33b7674fcfe82c1a0dad",
            "path": "_polyfill.js"
        }
    ]
}
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]