MAL-2026-13568

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-eventoutside/MAL-2026-13568.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13568
Published
2026-08-07T12:28:18Z
Modified
2026-08-07T13:20:36.748691816Z
Summary
Malicious code in dolyame-ui-eventoutside (npm)
Details

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

Source: amazon-inspector (0d57db31d52ade4e7de9ebb32a078ab75bf12fb7d40cdfb0caf987e5ef62229a)

On require() of dolyame-ui-eventoutside, bootstrap.js selects a platform-specific URL, downloads a binary from string-split-obfuscated Cloudflare Workers hosts (oob-worker.cf*.workers.dev) with a DNS-TXT-based fallback channel via sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, writes the payload to a disguised temp path (Windows: dotnetdiag<hex>.exe; Unix:.cache<hex>), chmods it 0755, and spawns it detached and unref'd through cmd.exe or /bin/sh. Destination hostnames are reassembled from split-string arrays (e.g. ["oob-worker.cf103-070.wo","rke","rs.de","v"].join("")) to defeat static inspection, and the dropped file is named to masquerade as a.NET diagnostics artifact (dotnetdiag) or a hidden cache file (.analyticsstate /.cache). The package's advertised purpose is API client wrappers; fetching and executing arbitrary attacker-controlled binaries is unrelated to that purpose and gives the publisher arbitrary code execution on any machine that installs or imports the package.

Database specific 
{
    "malicious-packages-origins": [
        {
            "versions": [
                "35.8.1"
            ],
            "modified_time": "2026-08-07T12:28:18Z",
            "sha256": "0d57db31d52ade4e7de9ebb32a078ab75bf12fb7d40cdfb0caf987e5ef62229a",
            "import_time": "2026-08-07T12:51:21.377622234Z",
            "id": "IN-MAL-2026-016994",
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

npm / dolyame-ui-eventoutside

Package

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

Affected ranges

Affected versions

35.*
35.8.1

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-eventoutside/MAL-2026-13568.json"
indicators 
{
    "evidence_files": [
        {
            "path": "_bootstrap.js",
            "sha256": "b7cfe4b6ef60a90e8b630b6a6f520a1cbd4c61768e6ea3a3daa6353eac5a9f79",
            "tlsh": "d8a1935a17fa30180392a5d8851f5816719ef65333c4e8d4fb4c66988fab229c3b39fc"
        }
    ],
    "package_integrity": [
        {
            "hashes": {
                "sha1": "0d18b150771881269372326cf05ae06e3e3db511",
                "sha512_sri": "sha512-HJlTLuKCsB1ZfIsSluy4jpJu6n1YJ+Y/UvOdi9argVFGjLORhN9QK8CG5xWddD36AsvFvQEVasmPQUc9CruKOA=="
            },
            "filename": "dolyame-ui-eventoutside-35.8.1.tgz"
        }
    ]
}