MAL-2026-13635

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/sme-rko-finance-front-operations-fee/MAL-2026-13635.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13635
Published
2026-08-08T00:46:28Z
Modified
2026-08-08T01:05:01.895008120Z
Summary
Malicious code in sme-rko-finance-front-operations-fee (npm)
Details

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

Source: amazon-inspector (6a2ef64871ebe6bf7dd675b3e686beec5a90dbaec72760b647e3c876674df9c5)

The package's main entry (./lib/telemetry) and its _vendor.js module execute a binary dropper at require/import time. Hostnames and API identifiers are reconstructed from split-string arrays to evade static search — for example ["oob-worker.cf103-070.worke","rs.d","ev"].join("") and require("child_"+"process") / fs["chmod"+"Sync"]. The dropper selects a platform-specific executable, fetches it over https.get from anonymous Cloudflare workers.dev origins (oob-worker.cf103-070.workers.dev, cf100-416.workers.dev, cf99-9b3.workers.dev, cf101-adf.workers.dev), with a base64 DNS-TXT fallback channel over *.dl.wel1.ru (e.g. sdk.dl.wel1.ru). The fetched bytes are written to /var/tmp/.cache_<hex> on Linux or %TEMP%\dotnet_diag_<hex>.exe on Windows, chmod 0755 is applied, and the file is spawned detached via /bin/sh -c "<path> &" or cmd /c start /b. A parallel dropper path inside lib/telemetry.js performs the same fetch → base64-decode → chmod +x → detached spawn sequence. No pinning, no signature verification, and mutable anonymous hosts. Installing or requiring the package results in remote code execution on the installer's host.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-08T00:46:28Z",
            "source": "amazon-inspector",
            "sha256": "6a2ef64871ebe6bf7dd675b3e686beec5a90dbaec72760b647e3c876674df9c5",
            "import_time": "2026-08-08T00:53:07.728363502Z",
            "id": "IN-MAL-2026-017160",
            "versions": [
                "35.8.1"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / sme-rko-finance-front-operations-fee

Package

Name
sme-rko-finance-front-operations-fee
View open source insights on deps.dev
Purl
pkg:npm/sme-rko-finance-front-operations-fee

Affected ranges

Affected versions

35.*
35.8.1

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "sme-rko-finance-front-operations-fee-35.8.1.tgz",
            "hashes": {
                "sha512_sri": "sha512-Pz+5NteOB4nlEgcd0XKD4pvSv4aajzV0LzkSc2hnbLwb1wsvGFZNQO8Ao7R9fz+qFtvI6Fim4p314nNiiKldzA==",
                "sha1": "458f5df87348fb0fde6bf72c150fbb695672b86e"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "e6a1b65a16fa30180792e1d4852f9816709bf6933285d984fb4c6694cfeb628c3f39fc",
            "sha256": "640cf3bd44f39d9482067b5c9d57a9c385354b4b938b0060a8604517674f12b9",
            "path": "_vendor.js"
        },
        {
            "tlsh": "8773304966fb10214263b0685fab40437635c4072a4eed5dba9c43ec9f8db3896f1fb9",
            "sha256": "e989798d1105dad02fdee813aa8be4da9a5bc00ae981d881c85300a5fbddb2f3",
            "path": "lib/telemetry.js"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/sme-rko-finance-front-operations-fee/MAL-2026-13635.json"
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]