MAL-2026-13570
Vulnerability from ossf_malicious_packages
Published
2026-08-07 12:30
Modified
2026-08-07 12:30
Summary
Malicious code in dolyame-ui-focusstatehoc (npm)
Details

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

Source: amazon-inspector (98b117a5b8b618c0597bcc422e68216cd3626389417aec2940febf447c033a88)

On require of the package's main entry (index.js), compat.js and lib/telemetry.js run a bootstrap routine that downloads a platform-specific binary (linux_x64, linux_arm64, darwin, win32.exe) from a shuffled list of obfuscated Cloudflare Workers subdomains (oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev), with a DNS-TXT fallback to sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru. The binary is written to /tmp or %TEMP% under a disguised name (.cache on unix, dotnet_diag_.exe on Windows), chmod 755, and spawned detached via cp.spawn("/bin/sh", ["-c", filePath + " &"], {detached:true, stdio:"ignore"}).unref(). No version pinning, no hash or signature verification. Destination hosts and sensitive API names are reconstructed at runtime via string-split concatenation (e.g. ["oob-worker.cf100-416.w","orkers.dev"].join(""), require("child_"+"process"), fs["chmod"+"Sync"], os"host"+"name") to evade static string matching. The behavior is framed with an 'analytics/telemetry' cover story and opt-out env vars. lib/telemetry.js additionally assembles a base64-encoded payload (Buffer.from(chunks, "base64")) and executes it via the same spawn/chmod chain, providing a second load-time RCE path.

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": "a6eec2dba5b1a19c34a46f1cc627f866f127411d2d7a3f2b57fa062217ed5515",
              "tlsh": "1aa1976916fa30180792e5d4841f9816719af65333c4e998fb8c6a984fda134c3f39ec"
            },
            {
              "path": "lib/telemetry.js",
              "sha256": "bf2e1a131d5d809bceccbab3025a6236104d460c54279f51ced09407cd3b1ba6",
              "tlsh": "85733f4966fb10214263b0685fbb40437635c4072a4aed5dba9c43ec9f8db3896f1fb9"
            }
          ],
          "package_integrity": [
            {
              "filename": "dolyame-ui-focusstatehoc-35.8.1.tgz",
              "hashes": {
                "sha1": "33c0423ac8867680a6976795fe4b16e1a0f7503f",
                "sha512_sri": "sha512-kSwEu9C6Ow/FGg3aODxquCy4qgfUBUFXVYVoQNDO6VJejogOAHtR3mDQIr/qC0AVmnJXdU/DoRcTJtWx7z2meQ=="
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "npm",
        "name": "dolyame-ui-focusstatehoc"
      },
      "versions": [
        "35.8.1"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-017009",
        "import_time": "2026-08-07T12:51:22.043229333Z",
        "modified_time": "2026-08-07T12:30:35Z",
        "sha256": "98b117a5b8b618c0597bcc422e68216cd3626389417aec2940febf447c033a88",
        "source": "amazon-inspector",
        "versions": [
          "35.8.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (98b117a5b8b618c0597bcc422e68216cd3626389417aec2940febf447c033a88)\nOn require of the package\u0027s main entry (index.js), _compat.js and lib/telemetry.js run a bootstrap routine that downloads a platform-specific binary (linux_x64, linux_arm64, darwin, win32.exe) from a shuffled list of obfuscated Cloudflare Workers subdomains (oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev), with a DNS-TXT fallback to sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru. The binary is written to /tmp or %TEMP% under a disguised name (.cache_\u003chex\u003e on unix, dotnet_diag_\u003chex\u003e.exe on Windows), chmod 755, and spawned detached via cp.spawn(\"/bin/sh\", [\"-c\", filePath + \" \u0026\"], {detached:true, stdio:\"ignore\"}).unref(). No version pinning, no hash or signature verification. Destination hosts and sensitive API names are reconstructed at runtime via string-split concatenation (e.g. [\"oob-worker.cf100-416.w\",\"orkers.dev\"].join(\"\"), require(\"child_\"+\"process\"), fs[\"chmod\"+\"Sync\"], os[\"host\"+\"name\"]()) to evade static string matching. The behavior is framed with an \u0027analytics/telemetry\u0027 cover story and opt-out env vars. lib/telemetry.js additionally assembles a base64-encoded payload (Buffer.from(chunks, \"base64\")) and executes it via the same spawn/chmod chain, providing a second load-time RCE path.\n",
  "id": "MAL-2026-13570",
  "modified": "2026-08-07T12:30:35Z",
  "published": "2026-08-07T12:30:35Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/dolyame-ui-focusstatehoc/v/35.8.1"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in dolyame-ui-focusstatehoc (npm)"
}



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