Malicious code in ton-jetton-tools (RubyGems)

{
  "id": "5c566fd81eef78ce4c2d8101b99da1498c2bcf094b3f506a905e01ff7f253af3",
  "url": "https://osv.dev/vulnerability/MAL-2026-17797",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Malicious code in ton-jetton-tools (RubyGems)",
    "summary": "--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (30e70156c49000f2a02130da13465705bea1e9663b3ba57246a4e264bb12db25) The gem's native-extension build script (extconf.rb) contains a base64-encoded Ruby payload that is decoded and executed via eval during `gem install`. The decoded payload forks a detached, delayed child process that opens a TCP connection to 45.138.12.177:8089 and bridges the socket to /bin/sh, giving the operator of that endpoint an interactive shell on the installer's host. Execution is gated by anti-analysis checks that skip the payload when the environment looks like CI or a sandbox (CI env vars set, hostname matches sandbox/firecracker/vagrant patterns, auto-generated usernames, CWD under /tmp, /var/tmp, /opt/rubygems, or /workspace, machine uptime under 1800 seconds) and only fires when developer artefacts (~/.ssh, ~/.gitconfig, ~/.npmrc, ~/.gem/credentials, ~/.bundle) are present. The surrounding extconf.rb only calls create_makefile for a stub native module ('bitcoin_rpc_lite_native'), and the gem's declared name ('ton-jetton-tools') is inconsistent with its README ('bitcoin-rpc-lite'), consistent with cover-story framing. ## Source: ossf-package-analysis (faf204a450ff3756811f85eb0dc1f394d43f945ba3cd37423cccb8e14c561fff) The OpenSSF Package Analysis project identified 'ton-jetton-tools' @ 0.9.1 (rubygems) as malicious. It is considered malicious because: - The package executes one or more commands associated with m",
    "evidence": "osv:MAL-2026-17797",
    "products": [
      {
        "name": {
          "value": "ton-jetton-tools",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.9.1",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "MAL-2026-17797",
      "aliases": [
        "MAL-2026-17797"
      ],
      "affected": [
        {
          "package": {
            "name": "ton-jetton-tools",
            "purl": "pkg:gem/ton-jetton-tools",
            "ecosystem": "RubyGems"
          },
          "versions": [
            "0.9.1"
          ],
          "database_specific": {
            "cwes": [
              {
                "name": "Embedded Malicious Code",
                "cweId": "CWE-506",
                "description": "The product contains code that appears to be malicious in nature."
              }
            ],
            "source": "https://github.com/ossf/malicious-packages/blob/main/osv/malicious/rubygems/ton-jetton-tools/MAL-2026-17797.json",
            "indicators": {
              "evidence_files": [
                {
                  "path": "ext/ton_jetton_tools/extconf.rb",
                  "tlsh": "9751775acf8359e55aa1c0c045798012faa3ab0a50646875f3ee0868ff59b26c0f12fe",
                  "sha256": "10218e975f54a4f11fe3954e1b584a5f05054003bf5773c3c2b8cceaa74ba763"
                }
              ]
            }
          }
        }
      ],
      "modified": "2026-10-13T23:30:06.209011938Z",
      "provider": "osv",
      "references": [
        "https://rubygems.org/gems/ton-jetton-tools/versions/0.9.1"
      ],
      "provider_metadata": {
        "malicious-packages-origins": [
          {
            "id": "IN-MAL-2026-021350",
            "sha256": "30e70156c49000f2a02130da13465705bea1e9663b3ba57246a4e264bb12db25",
            "source": "amazon-inspector",
            "versions": [
              "0.9.1"
            ],
            "import_time": "2026-10-11T14:17:58.307499638Z",
            "modified_time": "2026-10-11T13:45:55Z"
          },
          {
            "sha256": "faf204a450ff3756811f85eb0dc1f394d43f945ba3cd37423cccb8e14c561fff",
            "source": "ossf-package-analysis",
            "versions": [
              "0.9.1"
            ],
            "import_time": "2026-10-13T23:14:39.946587778Z",
            "modified_time": "2026-10-11T07:15:29Z"
          }
        ]
      }
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 313751,
  "published_at": "2026-10-11T07:15:29+00:00"
}