MAL-2026-13572
Vulnerability from ossf_malicious_packages
Published
2026-08-07 12:30
Modified
2026-08-07 12:30
Summary
Malicious code in dolyame-ui-iconspack (npm)
Details

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

Source: amazon-inspector (bd91e61b19f55a1d5e8f5d08b9b2b8a7203c8a600289214ff8eb8f26dc913534)

The package is published as an icon pack / data-transformation utility, but index.js unconditionally loads shim.js on require, which assembles Cloudflare Workers hostnames from split string fragments (oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev) with a DNS-TXT base64 fallback via sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru, downloads a platform-specific binary, writes it to /var/tmp/.cache or %TEMP%/dotnet_diag_.exe, chmods it to 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. lib/telemetry.js (the package main) contains a parallel dropper using the same shape, with require("child_"+"process"), fs["chmod"+"Sync"], base64 chunk reassembly from DNS-TXT records, and cp.spawn("/bin/sh", ["-c", filePath+" &"]). Hostnames and dangerous API names are split across concatenated fragments to evade static analysis. There is no hash or signature verification of the fetched payload, and the destinations are unrelated to any stated icon-pack functionality.

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": "_shim.js",
              "sha256": "a62ccc691ec992f445f294043cfb16910f14d6fdc502cc14fdd76cbe30782fc0",
              "tlsh": "d7a1b55a16fa701507a3e1d8851f5416719eea8333c4d998fb4c66588fa7124c3f39fc"
            },
            {
              "path": "lib/telemetry.js",
              "sha256": "3a1bdadd62c5c6637912b3e864f4ac2c9626319b0daa8c07d3c4c3386db2a39c",
              "tlsh": "ae73304966fb10214263b0685fab40437635c4072a4eed5dba9c43ec9f8db3896f1fb9"
            }
          ],
          "package_integrity": [
            {
              "filename": "dolyame-ui-iconspack-35.8.1.tgz",
              "hashes": {
                "sha1": "d42c71b8951fe8e2724430e044903f0793098bd0",
                "sha512_sri": "sha512-LkVMoS6mFWGIh+YS5mDH1T7EuM/vp+px2Jy6vc9UbV0Bmas04EHRbJJyudxs/Kxrb3qJi/llNaj7CzSIzxQlhQ=="
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "npm",
        "name": "dolyame-ui-iconspack"
      },
      "versions": [
        "35.8.1"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-017006",
        "import_time": "2026-08-07T12:51:21.904562751Z",
        "modified_time": "2026-08-07T12:30:06Z",
        "sha256": "bd91e61b19f55a1d5e8f5d08b9b2b8a7203c8a600289214ff8eb8f26dc913534",
        "source": "amazon-inspector",
        "versions": [
          "35.8.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (bd91e61b19f55a1d5e8f5d08b9b2b8a7203c8a600289214ff8eb8f26dc913534)\nThe package is published as an icon pack / data-transformation utility, but index.js unconditionally loads _shim.js on require, which assembles Cloudflare Workers hostnames from split string fragments (oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev) with a DNS-TXT base64 fallback via sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru, downloads a platform-specific binary, writes it to /var/tmp/.cache_\u003chex\u003e or %TEMP%/dotnet_diag_\u003chex\u003e.exe, chmods it to 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. lib/telemetry.js (the package main) contains a parallel dropper using the same shape, with require(\"child_\"+\"process\"), fs[\"chmod\"+\"Sync\"], base64 chunk reassembly from DNS-TXT records, and cp.spawn(\"/bin/sh\", [\"-c\", filePath+\" \u0026\"]). Hostnames and dangerous API names are split across concatenated fragments to evade static analysis. There is no hash or signature verification of the fetched payload, and the destinations are unrelated to any stated icon-pack functionality.\n",
  "id": "MAL-2026-13572",
  "modified": "2026-08-07T12:30:06Z",
  "published": "2026-08-07T12:30:06Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/dolyame-ui-iconspack/v/35.8.1"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in dolyame-ui-iconspack (npm)"
}



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