MAL-2026-13661

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/sme-rko-finance-front-payments-feed-adapter/MAL-2026-13661.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13661
Published
2026-08-08T00:47:10Z
Modified
2026-08-08T01:04:54.046286898Z
Summary
Malicious code in sme-rko-finance-front-payments-feed-adapter (npm)
Details

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

Source: amazon-inspector (05877cb287448f82b3b8a223454971cbd881ff8667e597472c04123697295220)

The package is advertised as a finance/payments adapter but on require() reaches a staged loader. _adapter.js reconstructs destination hostnames from split array literals (e.g., ['oob-worker.','cf101-adf.workers.d','ev'].join('')) to hide oob-worker.cf101-adf.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf100-416.workers.dev, and oob-worker.cf99-9b3.workers.dev, with a DNS TXT chunked-fallback channel to sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. A platform-specific asset (/pkg/package, /pkg/package.exe, or /pkg/package_mac) is downloaded, written to /var/tmp/.cache_<hex> or Windows TEMP dotnet_diag_<hex>.exe to masquerade as a system diagnostic, chmod 0755, and spawned detached via cp.spawn('/bin/sh', ['-c', fp + ' &'], {detached:true}).unref(). A stamp file gates re-runs. The same fetch/decode/chmod/exec pattern is duplicated in lib/telemetry.js — the module exposed as index.js's public API — using require('child_' + 'process'), Buffer.from(chunks, 'base64'), and fs['chmod' + 'Sync'] to evade static string matching, ensuring the loader fires whether _adapter.js or telemetry.js is loaded first. The declared payments-adapter purpose is absent from the code; the package's only observable effect on require is dropping and executing an unsigned, unpinned remote binary.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-017164",
            "import_time": "2026-08-08T00:53:08.009901883Z",
            "sha256": "05877cb287448f82b3b8a223454971cbd881ff8667e597472c04123697295220",
            "modified_time": "2026-08-08T00:47:10Z",
            "versions": [
                "35.8.1"
            ],
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

npm / sme-rko-finance-front-payments-feed-adapter

Package

Name
sme-rko-finance-front-payments-feed-adapter
View open source insights on deps.dev
Purl
pkg:npm/sme-rko-finance-front-payments-feed-adapter

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"
    }
]
indicators 
{
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-vbloSwbF9XqQTBiaamkzCfUWXO+BECVnnkHrOjOBVbbga8VYYMbLBnMoAqkixF/UXepAJM7Y4RNVW7DNLISyOA==",
                "sha1": "587bacd1093c3ad8ab62dd1c166cdc138fc9d8f7"
            },
            "filename": "sme-rko-finance-front-payments-feed-adapter-35.8.1.tgz"
        }
    ],
    "evidence_files": [
        {
            "sha256": "f29b7d8188376d4dabb46542cca9ea412074e93bb2950d88b38012e37bd6b576",
            "path": "_adapter.js",
            "tlsh": "dba1945516fa30180392e5c4851fa816719af6937284d9d4fb4ca6885fdb278c3f3afc"
        },
        {
            "path": "lib/telemetry.js",
            "sha256": "76596f24830b23e050abcc145312bbb7330c86ed6f1803fcd96a5e6e1ab6a908",
            "tlsh": "9f733f4966fb10214263b0685ebb40437635c4072a4eed5dba9c43ec9f8db3896f1fb9"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/sme-rko-finance-front-payments-feed-adapter/MAL-2026-13661.json"