mal-2026-13659
Vulnerability from ossf_malicious_packages
Published
2026-08-08 00:46
Modified
2026-08-08 00:46
Summary
Malicious code in sme-rko-finance-front-payments-currency-payment-domain (npm)
Details

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

Source: amazon-inspector (20b5dcef9a8613b9de1b3bbd1137a65cdbf087a9a96543602fb3372d7eca978f)

On require() of this package, index.js loads./loader.js which reconstructs C2 hostnames via array-join string concealment (oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev), with a DNS TXT-record payload channel fallback under *.dl.wel1.ru whose sequenced records are base64-decoded and concatenated. The loader fetches a platform-specific executable, writes it to /tmp or Windows Temp under a disguised name (.cache or dotnet_diag_.exe), chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe with unref(). A secondary duplicate path in lib/telemetry.js (re-exported by the main entry) uses concatenated identifier strings ('child_'+'process', 'chmod'+'Sync') to evade static scanners, base64-decodes chunks into an executable, chmods 755, and spawns via /bin/sh under an 'analytics-sdk' cover story. The package name mimics an internal corporate scope (sme-rko-finance-front-payments-currency-payment-domain) while being published unscoped and public on npm with a generic 'API client wrappers' description and empty author field, matching the shape of a dependency-confusion lure targeting a specific organization's private package name. Installing or importing this package results in full-host native code execution on the installer's machine from attacker-controlled infrastructure.

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": "_loader.js",
              "sha256": "3993ab07327680ee3d9a8fc9dfb7f1deb86149bbcc9ab9768daaf0ce4c93acae",
              "tlsh": "5ea1955a16fb30180793e6d8451f5816719ae68333c8d984ff4c66948fab12883b3afd"
            },
            {
              "path": "lib/telemetry.js",
              "sha256": "39763397d3d2783cb5a4762daeea1a6a9808b975259292487aabdff502539a83",
              "tlsh": "61733f4966fb10214263b0685ebb40437635c4072a4eed5dba9c43ec9f8db3896f1fb9"
            },
            {
              "path": "package.json",
              "sha256": "9f1df86d8cef9b7c3b6633684bfb622cd0b4dcaeb67117bbf1f6dbc3f5f94e20",
              "tlsh": "4ad0c2101ab26933a4c942290855926b6330ce2f1004780c13cf151c039e5b799fa32e"
            }
          ],
          "package_integrity": [
            {
              "filename": "sme-rko-finance-front-payments-currency-payment-domain-35.8.1.tgz",
              "hashes": {
                "sha1": "be957a31c0c75f359d7d22cc4eb4c2670a14e8b1",
                "sha512_sri": "sha512-i2dNdbdJe2dFIjWQy351Kfsw+nZ5mBSG94HpWyUYXj5u+ks+HSjqGaS8X8AJIbH5d9IULmL4O0PQ2w19P1UycQ=="
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "npm",
        "name": "sme-rko-finance-front-payments-currency-payment-domain"
      },
      "versions": [
        "35.8.1"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-017163",
        "import_time": "2026-08-08T00:53:07.95395224Z",
        "modified_time": "2026-08-08T00:46:57Z",
        "sha256": "20b5dcef9a8613b9de1b3bbd1137a65cdbf087a9a96543602fb3372d7eca978f",
        "source": "amazon-inspector",
        "versions": [
          "35.8.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (20b5dcef9a8613b9de1b3bbd1137a65cdbf087a9a96543602fb3372d7eca978f)\nOn require() of this package, index.js loads./_loader.js which reconstructs C2 hostnames via array-join string concealment (oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev), with a DNS TXT-record payload channel fallback under *.dl.wel1.ru whose sequenced records are base64-decoded and concatenated. The loader fetches a platform-specific executable, writes it to /tmp or Windows Temp under a disguised name (.cache_\u003chex\u003e or dotnet_diag_\u003chex\u003e.exe), chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe with unref(). A secondary duplicate path in lib/telemetry.js (re-exported by the main entry) uses concatenated identifier strings (\u0027child_\u0027+\u0027process\u0027, \u0027chmod\u0027+\u0027Sync\u0027) to evade static scanners, base64-decodes chunks into an executable, chmods 755, and spawns via /bin/sh under an \u0027analytics-sdk\u0027 cover story. The package name mimics an internal corporate scope (sme-rko-finance-front-payments-currency-payment-domain) while being published unscoped and public on npm with a generic \u0027API client wrappers\u0027 description and empty author field, matching the shape of a dependency-confusion lure targeting a specific organization\u0027s private package name. Installing or importing this package results in full-host native code execution on the installer\u0027s machine from attacker-controlled infrastructure.\n",
  "id": "MAL-2026-13659",
  "modified": "2026-08-08T00:46:57Z",
  "published": "2026-08-08T00:46:57Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/sme-rko-finance-front-payments-currency-payment-domain/v/35.8.1"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in sme-rko-finance-front-payments-currency-payment-domain (npm)"
}



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Nomenclature

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