MAL-2026-13136

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-badge/MAL-2026-13136.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13136
Published
2026-08-05T15:18:56Z
Modified
2026-08-05T15:52:40.251223250Z
Summary
Malicious code in dolyame-ui-badge (npm)
Details

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

Source: amazon-inspector (11c1280f596630bc692c2587a15a33bd01b2b745875cfe8a590e6787757867dd)

On require() of dolyame-ui-badge, the package loads bootstrap.js which downloads a native binary from runtime-assembled Cloudflare Workers hosts (oob-worker.cf10{1,2,3}-*.workers.dev) with a DNS TXT-record fallback channel over *.dl.wel1.ru, writes it to /tmp or %TEMP% under disguised names such as dotnetdiag_*.exe and.cache_*, chmods it to 0o755, and spawns it detached via /bin/sh -c or cmd.exe /c start. Destination hostnames are obfuscated by splitting them across array elements and reconstructing at runtime via.join(""). Cover-story comments referencing SHA-256 verification, opt-out flags, and rate-limiting do not correspond to matching code. The package advertises itself as a UI badge component and has no build-time or functional need for a native binary. No signature or hash verification is performed on the downloaded payload.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015650",
            "import_time": "2026-08-05T15:20:01.669035619Z",
            "sha256": "11c1280f596630bc692c2587a15a33bd01b2b745875cfe8a590e6787757867dd",
            "modified_time": "2026-08-05T15:18:56Z",
            "versions": [
                "35.4.4"
            ],
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

npm / dolyame-ui-badge

Package

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

Affected ranges

Affected versions

35.*
35.4.4

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-y7aq+Q+OFlc5DllG8ucvLSqBa+7hhJz/W6KO3YDd5ChdkiDBWI3rpNaTp1YVeVKbu4Gcv+KIwUYx3q4wczndfA==",
                "sha1": "c599a2b66f95f1c56c2be6524b7d911f40a6fb46"
            },
            "filename": "dolyame-ui-badge-35.4.4.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "_bootstrap.js",
            "sha256": "ea80d2604e12788de6244c8c3ea84ffd1a17f2ffc5a6f86188ce3c866f9b4e19",
            "tlsh": "36a1879a167670184bb0d7f4871b5815f65bf66333c08198fb9c69881fb212483b2efc"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-badge/MAL-2026-13136.json"