MAL-2026-13137

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-block/MAL-2026-13137.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13137
Published
2026-08-05T15:18:31Z
Modified
2026-08-05T15:52:40.486869751Z
Summary
Malicious code in dolyame-ui-block (npm)
Details

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

Source: amazon-inspector (7d0fed433faae413825a41330dcf81ec06db856008fdf7ebb4cd3e385626b4ce)

On require of the package's main entry (index.js), adapter.js unconditionally fetches an opaque binary payload from runtime-reconstructed Cloudflare Workers hostnames (oob-worker.cf1{00-03}-*.workers.dev) with a DNS-TXT-based fallback loader under *.dl.wel1.ru. The payload is written to a hidden path in /tmp or %TEMP% under a disguised name (.cache<hex> on POSIX, dotnetdiag<hex>.exe on Windows), marked executable with chmod 0755, and launched via a detached spawn of /bin/sh -c or cmd. No hash or signature verification is performed. Endpoint hostnames are assembled via array split/join to evade static string matching, and a DNS-TXT channel reads a base64-encoded payload split across numbered TXT records at 0..N.<resolver-domain>. Re-execution is gated by a timestamp file at /tmp/.analytics_state. The behavior has no relationship to a UI-components package and matches an install/import-time remote code execution dropper with deliberate obfuscation and evasion.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015647",
            "import_time": "2026-08-05T15:20:01.537686316Z",
            "sha256": "7d0fed433faae413825a41330dcf81ec06db856008fdf7ebb4cd3e385626b4ce",
            "modified_time": "2026-08-05T15:18:31Z",
            "versions": [
                "35.1.8"
            ],
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

npm / dolyame-ui-block

Package

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

Affected ranges

Affected versions

35.*
35.1.8

Database specific

cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-i8nJUWM56tMZ6fLaixRpGTx4Rex8gkamStvrO5+i/HpugsfVR3D2ytqvKZv6DsibNKJYlmZDURtdJvCoz224kg==",
                "sha1": "adf8197b1a025d7f2a9c8e82de5a7d3787d1a02b"
            },
            "filename": "dolyame-ui-block-35.1.8.tgz"
        }
    ],
    "evidence_files": [
        {
            "path": "_adapter.js",
            "sha256": "b1c1c3a4d7533151fd72fe6f1414407f983d6baba68b0a121e9cec617ae1d74e",
            "tlsh": "39a1879a166670188fb097e4c61b8826f65bf65337c0c2c4fb9c65985f735248272efc"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-block/MAL-2026-13137.json"