{
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      "type": "marking-definition",
      "spec_version": "2.1",
      "id": "marking-definition--613f2e26-407d-48c7-9eca-b8e91df99dc9",
      "created": "2017-01-20T00:00:00.000Z",
      "definition_type": "tlp",
      "name": "TLP:WHITE",
      "definition": {
        "tlp": "white"
      }
    },
    {
      "type": "identity",
      "spec_version": "2.1",
      "id": "identity--c1b401e5-a927-598d-859c-fc757d058154",
      "created": "2026-09-07T00:00:00.000Z",
      "modified": "2026-09-07T00:00:00.000Z",
      "created_by_ref": "identity--c1b401e5-a927-598d-859c-fc757d058154",
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      ],
      "name": "skopnix",
      "identity_class": "organization",
      "description": "skopnix — open threat intelligence. Aggregated and published, not authored: cite the external_references, not us.",
      "contact_information": "https://skopnix.com"
    },
    {
      "type": "intrusion-set",
      "spec_version": "2.1",
      "created": "2026-09-07T00:00:00.000Z",
      "modified": "2026-10-06T13:27:36.797Z",
      "created_by_ref": "identity--c1b401e5-a927-598d-859c-fc757d058154",
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      "id": "intrusion-set--9acdb67d-a53d-5666-b2c1-f8c4644202a3",
      "name": "Blacktail",
      "aliases": [
        "Blacktail"
      ],
      "description": "Blacktail is a cybercrime group that has gained attention for its ransomware campaigns, particularly the Buhti ransomware. They are known for using custom-built data exfiltration tools and have been observed exploiting vulnerabilities in both Windows and Linux systems.",
      "external_references": [
        {
          "source_name": "skopnix",
          "external_id": "blacktail",
          "url": "https://skopnix.com/actors/blacktail"
        },
        {
          "source_name": "symantec-enterprise-blogs.security.com",
          "url": "https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/buhti-ransomware"
        },
        {
          "source_name": "fortiguard.fortinet.com",
          "url": "https://fortiguard.fortinet.com/threat-signal-report/5170"
        },
        {
          "source_name": "redpacketsecurity.com",
          "url": "https://www.redpacketsecurity.com/new-buhti-ransomware-gang-uses-leaked-windows-linux-encryptors/"
        },
        {
          "source_name": "redpacketsecurity.com",
          "url": "https://www.redpacketsecurity.com/buhti-ransomware-gang-switches-tactics-utilizes-leaked-lockbit-and-babuk-code/"
        }
      ]
    }
  ]
}