MAL-2026-13555
Vulnerability from ossf_malicious_packages
Published
2026-08-07 12:31
Modified
2026-08-07 12:31
Summary
Malicious code in dolyame-ui-cardlogo (npm)
Details

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

Source: amazon-inspector (e24f8a4fc7c7641f4b66eb6a3c8dc9535bd66e2632183c5090e0b7ec909f6c2d)

On load, index.js require()s polyfill.js which unconditionally downloads a platform-specific binary from hostnames reconstructed at runtime via string-array concatenation (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev), with a DNS TXT-record fallback resolving to sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru. The fetched binary is written to /tmp or %TEMP% under a disguised name (.cache on POSIX, dotnet_diag_.exe on Windows), chmod 0755'd, and spawned detached via /bin/sh -c or cmd.exe /c start. Hostnames are assembled from split string arrays, temp filenames imitate legitimate diagnostic tooling, and helper functions carry 'telemetry'/'analytics' cover-story naming with DISABLE_TELEMETRY/ANALYTICS_OPT_OUT env checks — none of this behavior relates to the package's stated UI purpose.

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": "_polyfill.js",
              "sha256": "5930298da2d67019bed91100f7f0fbd1e5e38394416340280d4095c137b7aedf",
              "tlsh": "cda1e71915fb701803a2e5d4851f6416329bf6533284e9c8ff4c66849fab17883f38ec"
            }
          ],
          "package_integrity": [
            {
              "filename": "dolyame-ui-cardlogo-35.8.1.tgz",
              "hashes": {
                "sha1": "ff06f942a0e8eb0634fd5e0360144ce7b0b458e0",
                "sha512_sri": "sha512-8CN+svnkGcNHS8dgsq/EsYo0um6P4dJ9miIooAvZfzaz2Z1CPt1FbuNDMNmm7mDqvrdxYmGO2x0dafEes0XhvQ=="
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "npm",
        "name": "dolyame-ui-cardlogo"
      },
      "versions": [
        "35.8.1"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-017013",
        "import_time": "2026-08-07T12:51:22.166892778Z",
        "modified_time": "2026-08-07T12:31:07Z",
        "sha256": "e24f8a4fc7c7641f4b66eb6a3c8dc9535bd66e2632183c5090e0b7ec909f6c2d",
        "source": "amazon-inspector",
        "versions": [
          "35.8.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (e24f8a4fc7c7641f4b66eb6a3c8dc9535bd66e2632183c5090e0b7ec909f6c2d)\nOn load, index.js require()s _polyfill.js which unconditionally downloads a platform-specific binary from hostnames reconstructed at runtime via string-array concatenation (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev), with a DNS TXT-record fallback resolving to sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru. The fetched binary is written to /tmp or %TEMP% under a disguised name (.cache_\u003chex\u003e on POSIX, dotnet_diag_\u003chex\u003e.exe on Windows), chmod 0755\u0027d, and spawned detached via /bin/sh -c or cmd.exe /c start. Hostnames are assembled from split string arrays, temp filenames imitate legitimate diagnostic tooling, and helper functions carry \u0027telemetry\u0027/\u0027analytics\u0027 cover-story naming with DISABLE_TELEMETRY/ANALYTICS_OPT_OUT env checks \u2014 none of this behavior relates to the package\u0027s stated UI purpose.\n",
  "id": "MAL-2026-13555",
  "modified": "2026-08-07T12:31:07Z",
  "published": "2026-08-07T12:31:07Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/dolyame-ui-cardlogo/v/35.8.1"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in dolyame-ui-cardlogo (npm)"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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