mal-2026-17796

{
  "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": "ext/staking_apr_fetcher/extconf.rb",
              "sha256": "10218e975f54a4f11fe3954e1b584a5f05054003bf5773c3c2b8cceaa74ba763",
              "tlsh": "9751775acf8359e55aa1c0c045798012faa3ab0a50646875f3ee0868ff59b26c0f12fe"
            },
            {
              "path": "metadata.yaml",
              "sha256": "512430b24b502e71911f0b3f86fd3ae17514fceef9c91fb21763382955c0b086",
              "tlsh": "1f11ada0a9c3f437f512e3f698403303f3e3d618fe756904a9ab8592438a56e37570a2"
            }
          ]
        },
        "source": "https://github.com/ossf/malicious-packages/blob/main/osv/malicious/rubygems/staking-apr-fetcher/MAL-2026-17796.json"
      },
      "package": {
        "ecosystem": "RubyGems",
        "name": "staking-apr-fetcher",
        "purl": "pkg:gem/staking-apr-fetcher"
      },
      "versions": [
        "0.9.1"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    },
    {
      "contact": [
        "https://github.com/ossf/package-analysis",
        "https://openssf.slack.com/channels/package_analysis"
      ],
      "name": "OpenSSF: Package Analysis",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-021368",
        "import_time": "2026-10-11T14:17:59.809936671Z",
        "modified_time": "2026-10-11T13:48:43Z",
        "sha256": "405ab5b9651b8e8817ae91290042ec22673c5c99c1b58f45747e47cbb85aeacf",
        "source": "amazon-inspector",
        "versions": [
          "0.9.1"
        ]
      },
      {
        "import_time": "2026-10-13T23:14:38.21108378Z",
        "modified_time": "2026-10-11T07:35:32Z",
        "sha256": "77e16e0b65be41b278edbb76b9a9d73b9567d78d302a6b568dc037ced7efce7f",
        "source": "ossf-package-analysis",
        "versions": [
          "0.9.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (405ab5b9651b8e8817ae91290042ec22673c5c99c1b58f45747e47cbb85aeacf)\nThe gem declares a native extension whose build script (extconf.rb) decodes a base64-embedded Ruby payload and executes it via eval during `gem install`. The payload double-forks a detached background process that opens a TCP connection to the hardcoded host 45.138.12.177:8089 and bidirectionally copies between that socket and a locally spawned /bin/sh, giving the operator of that endpoint interactive shell access on the installer's machine. Execution is gated by anti-analysis checks: the payload only fires when the environment does not look like CI, an ephemeral/sandbox VM (patterns matching uvm/firecracker/sandbox/vagrant), a generated analyst user (patterns matching uA\\d+/sandbox/tester/analys/scanner), or a known analysis path (/opt/rubygems, /tmp/, /workspace/), and only when system uptime exceeds 1800 seconds and developer-identifying files exist (~/.ssh, ~/.gitconfig, ~/.gem/credentials, ~/.bundle, ~/.npmrc). The gem's advertised identity is a cover story: it is published as `staking-apr-fetcher` with a staking-related summary, but the README is titled `bitcoin-rpc-lite`, the extension's generated makefile is `bitcoin_rpc_lite_native`, no C sources are shipped for that native target, and the Ruby library (lib/staking_apr_fetcher.rb) is an inert stub defining only VERSION/build_id/healthy?. The package has no legitimate functionality; its sole purpose is to deliver the install-time backdoor.\n\n## Source: ossf-package-analysis (77e16e0b65be41b278edbb76b9a9d73b9567d78d302a6b568dc037ced7efce7f)\nThe OpenSSF Package Analysis project identified 'staking-apr-fetcher' @ 0.9.1 (rubygems) as malicious.\n\nIt is considered malicious because:\n\n- The package executes one or more commands associated with malicious behavior.\n",
  "id": "MAL-2026-17796",
  "modified": "2026-10-13T23:30:06.109130457Z",
  "published": "2026-10-11T07:35:32Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://rubygems.org/gems/staking-apr-fetcher/versions/0.9.1"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "Malicious code in staking-apr-fetcher (RubyGems)"
}