MAL-2026-13552
Vulnerability from ossf_malicious_packages
Published
2026-08-07 12:35
Modified
2026-08-07 12:35
Summary
Malicious code in dolyame-boxy-independent-bnpl-main-title (npm)
Details

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

Source: amazon-inspector (7fd169fe81bc68427ce8c3b472cb376e6d3fdad489d07595a8c8f08f894ac154)

On require, index.js loads polyfill.js which reconstructs hostnames from split string fragments (e.g., 'oob-worker.cf99-9b3.wor'+'ke'+'rs.dev') to reach multiple Cloudflare Workers subdomains, downloads an opaque platform-specific binary, writes it to /tmp/.cache on Unix or %TEMP%\dotnet_diag_.exe on Windows, chmods 0755, and spawns it detached via /bin/sh -c or cmd with stdio ignored. A DNS TXT chunked-transfer fallback under *.dl.wel1.ru reassembles a base64 payload when HTTPS is blocked. Cover-story naming — file polyfill.js, cache marker analytics_state, Windows payload dotnet_diag.exe, and DISABLE_TELEMETRY/ANALYTICS_OPT_OUT env vars — disguises the fetch-and-exec chain in a package that advertises itself as a BNPL module.

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": "f64ebd3a72d723d57e2e95b9d56656afcba9dd21316cc03a4ba64c9045269827",
              "tlsh": "d5a1c79a02a970188bb0dbe5c7175416f65bf6633280c6d4f76ca9941fb612483b2efc"
            }
          ],
          "package_integrity": [
            {
              "filename": "dolyame-boxy-independent-bnpl-main-title-35.5.6.tgz",
              "hashes": {
                "sha1": "9c691e92d1d367399846c1d7a484f8e729d3e624",
                "sha512_sri": "sha512-TpodgaeQ1JIybMlZlj+34JOltY+GbYQJpLFNNOksIxxv8HxAkULUD6MMawxl3dC2x8LMYn8Mzw3bJ5YSZyhqhg=="
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "npm",
        "name": "dolyame-boxy-independent-bnpl-main-title"
      },
      "versions": [
        "35.5.6"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-017042",
        "import_time": "2026-08-07T12:51:23.496743268Z",
        "modified_time": "2026-08-07T12:35:26Z",
        "sha256": "7fd169fe81bc68427ce8c3b472cb376e6d3fdad489d07595a8c8f08f894ac154",
        "source": "amazon-inspector",
        "versions": [
          "35.5.6"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (7fd169fe81bc68427ce8c3b472cb376e6d3fdad489d07595a8c8f08f894ac154)\nOn require, index.js loads _polyfill.js which reconstructs hostnames from split string fragments (e.g., \u0027oob-worker.cf99-9b3.wor\u0027+\u0027ke\u0027+\u0027rs.dev\u0027) to reach multiple Cloudflare Workers subdomains, downloads an opaque platform-specific binary, writes it to /tmp/.cache_\u003chex\u003e on Unix or %TEMP%\\dotnet_diag_\u003chex\u003e.exe on Windows, chmods 0755, and spawns it detached via /bin/sh -c or cmd with stdio ignored. A DNS TXT chunked-transfer fallback under *.dl.wel1.ru reassembles a base64 payload when HTTPS is blocked. Cover-story naming \u2014 file _polyfill.js, cache marker analytics_state, Windows payload dotnet_diag_\u003chex\u003e.exe, and DISABLE_TELEMETRY/ANALYTICS_OPT_OUT env vars \u2014 disguises the fetch-and-exec chain in a package that advertises itself as a BNPL module.\n",
  "id": "MAL-2026-13552",
  "modified": "2026-08-07T12:35:26Z",
  "published": "2026-08-07T12:35:26Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/dolyame-boxy-independent-bnpl-main-title/v/35.5.6"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in dolyame-boxy-independent-bnpl-main-title (npm)"
}



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