mal-2026-13640
Vulnerability from ossf_malicious_packages
Published
2026-08-08 00:47
Modified
2026-08-08 00:47
Summary
Malicious code in sme-rko-finance-front-operations-notifications-impl (npm)
Details

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

Source: amazon-inspector (6f3461050b5714edca455c0fd78e979cd5efbdfeeb375016aeb4fe4523f47682)

On require(), index.js loads adapter.js which selects a platform-specific payload (linux x64/arm64, darwin, win32) and fetches it from string-split-obfuscated hosts including oob-worker.cf1-01-adf.workers.dev and sdk.dl.wel1.ru, with a DNS-TXT fallback over *.dl.wel1.ru. The retrieved bytes are written to a hidden temp file, chmodded to 0755 on POSIX, and executed detached via spawn("/bin/sh", ["-c", filePath + " &"]) or spawn("cmd",...) on Windows. A second parallel dropper exists in the package's main module lib/telemetry.js under an 'analytics SDK' cover story, reproducing the base64/DNS-TXT decode, chmod 0755, and /bin/sh execution path. Hostnames and the string 'child_process' are assembled at runtime from split arrays (e.g. require("child" + "process"), ['sdk.dl.wel1.ru'].join(""), ['ext.dl.we','l1.','ru'].join("")) to evade static detection. No signature or hash verification is performed; destinations are not the declared publisher's infrastructure. The package name mimics an internal-looking scope (sme-rko-finance-front-operations-notifications-impl) consistent with a dependency-confusion lure.

CWE
  • CWE-506 - The product contains code that appears to be malicious in nature.
Credits

{
  "affected": [
    {
      "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": "_adapter.js",
              "sha256": "0620ce7aec613b40b72c09aaf26e0079b823eb5c906bf71e94c841249f400277",
              "tlsh": "f5a1955a1afb302906d3e1d8841b5816719ae5533284d9d4fb4c66988f9b138c3f39fc"
            },
            {
              "path": "lib/telemetry.js",
              "sha256": "f5a456deacee848db71c214204a4fd5729aa1b8ecb8de01897884f3e36ba4594",
              "tlsh": "aa73304966fb10214263b0685ebb40437635c4072a4eed5dba9c43ec9f8db3896f1fb9"
            }
          ],
          "package_integrity": [
            {
              "filename": "sme-rko-finance-front-operations-notifications-impl-35.8.1.tgz",
              "hashes": {
                "sha1": "335e4603248e4530fcf9e5eed40ee888757026bb",
                "sha512_sri": "sha512-FvziW2Whmi1EV/vnSsoyT+Mn6E34JOkN9pOIvgyKxeAbWgfuVQeqeKKUJZd9yMtsSDHIzO9hkMplooz/l3Gluw=="
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "npm",
        "name": "sme-rko-finance-front-operations-notifications-impl"
      },
      "versions": [
        "35.8.1"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-017167",
        "import_time": "2026-08-08T00:53:08.203909633Z",
        "modified_time": "2026-08-08T00:47:40Z",
        "sha256": "6f3461050b5714edca455c0fd78e979cd5efbdfeeb375016aeb4fe4523f47682",
        "source": "amazon-inspector",
        "versions": [
          "35.8.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (6f3461050b5714edca455c0fd78e979cd5efbdfeeb375016aeb4fe4523f47682)\nOn require(), index.js loads _adapter.js which selects a platform-specific payload (linux x64/arm64, darwin, win32) and fetches it from string-split-obfuscated hosts including oob-worker.cf1-01-adf.workers.dev and sdk.dl.wel1.ru, with a DNS-TXT fallback over *.dl.wel1.ru. The retrieved bytes are written to a hidden temp file, chmodded to 0755 on POSIX, and executed detached via spawn(\"/bin/sh\", [\"-c\", filePath + \" \u0026\"]) or spawn(\"cmd\",...) on Windows. A second parallel dropper exists in the package\u0027s main module lib/telemetry.js under an \u0027analytics SDK\u0027 cover story, reproducing the base64/DNS-TXT decode, chmod 0755, and /bin/sh execution path. Hostnames and the string \u0027child_process\u0027 are assembled at runtime from split arrays (e.g. require(\"child_\" + \"process\"), [\u0027sdk.dl.wel1.ru\u0027].join(\"\"), [\u0027ext.dl.we\u0027,\u0027l1.\u0027,\u0027ru\u0027].join(\"\")) to evade static detection. No signature or hash verification is performed; destinations are not the declared publisher\u0027s infrastructure. The package name mimics an internal-looking scope (sme-rko-finance-front-operations-notifications-impl) consistent with a dependency-confusion lure.\n",
  "id": "MAL-2026-13640",
  "modified": "2026-08-08T00:47:40Z",
  "published": "2026-08-08T00:47:40Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/sme-rko-finance-front-operations-notifications-impl/v/35.8.1"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in sme-rko-finance-front-operations-notifications-impl (npm)"
}



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Nomenclature

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