mal-2026-13662
Vulnerability from ossf_malicious_packages
Published
2026-08-08 00:45
Modified
2026-08-08 00:45
Summary
Malicious code in sme-rko-finance-front-payments-feed-display-list (npm)
Details

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

Source: amazon-inspector (eedf1850bd0f58b8adef8a6b6c3ac13adf7848819306e5a7b9518cbb174911a3)

On require of the package's main module, compat.js unconditionally downloads a platform-specific executable and runs it. Destination hosts are assembled at runtime from split string arrays (e.g. ['oob-','worker.cf99-9b3.wo','rkers.de','v'].join('')) to evade static analysis, resolving to anonymous .workers.dev subdomains that do not match any package publisher. The fetched bytes are written to a temp path under decoy names (dotnet_diag_.exe,.cache), chmodded 0755, and spawned detached via child_process.spawn ('/bin/sh' or 'cmd'), with a platform map covering linux/darwin/win32. When HTTP fetch fails, a fallback channel resolves DNS TXT records at c. under .dl.wel1.ru for a chunk count, reassembles base64-encoded payload chunks from 0., 1.,..., and executes the resulting binary. No hash or signature verification is performed. The package name presents as a benign finance-frontend UI component, which is inconsistent with the download-and-execute behavior.

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": "_compat.js",
              "sha256": "b9bdf00151502f5e7d07694d8562eb6ad93d23416ca7b4c3d69ca5d561df6873",
              "tlsh": "84a1b65a06fa70180792e5d4892f5417719afa5332c4ecc0fb0c66984fda128c3b39fd"
            }
          ],
          "package_integrity": [
            {
              "filename": "sme-rko-finance-front-payments-feed-display-list-35.8.1.tgz",
              "hashes": {
                "sha1": "608e4bffcdc06956e56f42d834095731df2edc00",
                "sha512_sri": "sha512-b3ZdFWXIM/9xSuo9b7wE4iYmVxWhVAs3F1MT0s5dfdqPnEzybIjE/Yz05ApBU68XbY9Hdwx3gbFw5mP+NV/gXA=="
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "npm",
        "name": "sme-rko-finance-front-payments-feed-display-list"
      },
      "versions": [
        "35.8.1"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-017152",
        "import_time": "2026-08-08T00:53:07.19014393Z",
        "modified_time": "2026-08-08T00:45:22Z",
        "sha256": "eedf1850bd0f58b8adef8a6b6c3ac13adf7848819306e5a7b9518cbb174911a3",
        "source": "amazon-inspector",
        "versions": [
          "35.8.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (eedf1850bd0f58b8adef8a6b6c3ac13adf7848819306e5a7b9518cbb174911a3)\nOn require of the package\u0027s main module, _compat.js unconditionally downloads a platform-specific executable and runs it. Destination hosts are assembled at runtime from split string arrays (e.g. [\u0027oob-\u0027,\u0027worker.cf99-9b3.wo\u0027,\u0027rkers.de\u0027,\u0027v\u0027].join(\u0027\u0027)) to evade static analysis, resolving to anonymous *.workers.dev subdomains that do not match any package publisher. The fetched bytes are written to a temp path under decoy names (dotnet_diag_*.exe,.cache_*), chmodded 0755, and spawned detached via child_process.spawn (\u0027/bin/sh\u0027 or \u0027cmd\u0027), with a platform map covering linux/darwin/win32. When HTTP fetch fails, a fallback channel resolves DNS TXT records at c.\u003cdomain\u003e under *.dl.wel1.ru for a chunk count, reassembles base64-encoded payload chunks from 0.\u003cdomain\u003e, 1.\u003cdomain\u003e,..., and executes the resulting binary. No hash or signature verification is performed. The package name presents as a benign finance-frontend UI component, which is inconsistent with the download-and-execute behavior.\n",
  "id": "MAL-2026-13662",
  "modified": "2026-08-08T00:45:22Z",
  "published": "2026-08-08T00:45:22Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/sme-rko-finance-front-payments-feed-display-list/v/35.8.1"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in sme-rko-finance-front-payments-feed-display-list (npm)"
}



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Sightings

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Nomenclature

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