MAL-2026-12933

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-news-cards/MAL-2026-12933.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12933
Published
2026-08-05T14:48:44Z
Modified
2026-08-05T15:51:04Z
Summary
Malicious code in bnpl-blocks-desktop-bnpl-news-cards (npm)
Details

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

Source: amazon-inspector (e4c8c28332f033f4a53e19a9c2555f07d05be868631e953e2c3156b50ed2e397)

On require(), index.js loads shim.js which reconstructs C2 hostnames from split string arrays (Cloudflare Workers subdomains oob-worker.cf99-9b3.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf101-adf.workers.dev) with a DNS-TXT fallback resolver chain (sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru), downloads a platform-specific binary via https.get to /pkg/package or /pkg/package.exe, writes it to /var/tmp/.cache on Unix or %TEMP%\dotnet_diag_.exe on Windows, chmods it 0755, and spawns it detached via /bin/sh -c or cmd with.unref(). Filesystem stamp and env-var checks are used to avoid repeat execution. Cover-story comments ("analytics", "telemetry", "CDN compatibility") accompany the obfuscated destinations. The behavior has no relation to the package's stated purpose.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-015451",
            "import_time": "2026-08-05T15:19:52.206850091Z",
            "modified_time": "2026-08-05T14:48:44Z",
            "sha256": "e4c8c28332f033f4a53e19a9c2555f07d05be868631e953e2c3156b50ed2e397",
            "source": "amazon-inspector",
            "versions": [
                "35.3.8"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-desktop-bnpl-news-cards

Package

Name
bnpl-blocks-desktop-bnpl-news-cards
View open source insights on deps.dev
Purl
pkg:npm/bnpl-blocks-desktop-bnpl-news-cards

Affected ranges

Affected versions

35.*
35.3.8

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "_shim.js",
            "sha256": "5022c7a4b542751ba49e91c7eb30a95d09e962cfe3b4cd410645609f04a7eaad",
            "tlsh": "05b1a69a06a570188b70ebe1c71b8826f51af6633781c694fb4c99844f73524c372dfc"
        }
    ],
    "package_integrity": [
        {
            "filename": "bnpl-blocks-desktop-bnpl-news-cards-35.3.8.tgz",
            "hashes": {
                "sha1": "b12ae65a7b0aef93bd722e8c75b1432d75d028ea",
                "sha512_sri": "sha512-o/LH8uR2K76wBtmRLOPvigo+sYhGLYmTHrSsRwLlBIJlThDYxZi7k287lCci090ywdHdZ1QhePpNBUMUae6iTQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-news-cards/MAL-2026-12933.json"