MAL-2026-12913

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-article-author/MAL-2026-12913.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12913
Published
2026-08-05T14:51:58Z
Modified
2026-08-05T15:50:55.185380770Z
Summary
Malicious code in bnpl-blocks-desktop-bnpl-article-author (npm)
Details

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

Source: amazon-inspector (f80a4ff82e37de309fbc903891bd8ac770f0542251e9b4afc15fbd36e94ac21c)

On require, index.js loads _shim.js, which fetches a platform-specific native executable from hardcoded hosts reconstructed at runtime via array .join('') to evade string search: oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev. The fetched bytes are written to /tmp or %TEMP% under cover-story names (dotnet_diag_*.exe, .cache_*), chmodded 0755, and spawned detached via spawn('/bin/sh', ['-c', fp + ' &'], {detached:true}) or spawn('cmd',...). A DNS-over-TXT covert channel provides fallback delivery: dns.resolveTxt is used against c.<domain> and <i>.<domain> under sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru; TXT records are base64-decoded, concatenated into an executable buffer, written to disk and spawned. A state file .analytics_state is maintained. The package's declared name ("session management") does not justify fetching or executing native binaries, and none of the destinations are publisher-owned or version-pinned; the delivered bytes are opaque, un-hashed, and mutable at the operators' discretion.

Database specific 
{
    "malicious-packages-origins": [
        {
            "versions": [
                "35.9.6"
            ],
            "id": "IN-MAL-2026-015473",
            "import_time": "2026-08-05T15:19:53.329449004Z",
            "modified_time": "2026-08-05T14:51:58Z",
            "source": "amazon-inspector",
            "sha256": "f80a4ff82e37de309fbc903891bd8ac770f0542251e9b4afc15fbd36e94ac21c"
        }
    ]
}
References
Credits

Affected packages

npm / bnpl-blocks-desktop-bnpl-article-author

Package

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

Affected ranges

Affected versions

35.*
35.9.6

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
indicators 
{
    "package_integrity": [
        {
            "filename": "bnpl-blocks-desktop-bnpl-article-author-35.9.6.tgz",
            "hashes": {
                "sha512_sri": "sha512-vUdlaHECQl6oEpSXD3Du0N5OgH3vcIrITaZILasOQHRBkPpgKDYeQnCSQXpxkQLtrdImBhr3okisQnM+VlAV6Q==",
                "sha1": "de3c093597795bc491338dd62f7d8b8d956b59d2"
            }
        }
    ],
    "evidence_files": [
        {
            "path": "_shim.js",
            "tlsh": "3da1959a026570198bb0d7f48717481afa5ae6633781c294fb5c69985fb3124c3b2efc",
            "sha256": "cfffd7f9260309f0d66662cfc3861515ecf116bddb42fc12e4cfc813e5786bf3"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-article-author/MAL-2026-12913.json"