{
  "family": "ursnif",
  "sample_count": 8188,
  "category": "banking_trojan",
  "description": "Ursnif is a banking trojan and a variant of the Gozi malware. According to MITRE ATT&CK, it has been spread through automated exploit kits, spearphishing attachments, and malicious links. While it is associated primarily with data theft, some variants add components such as backdoors, spyware, and file injectors, giving it a wide range of behaviors. Its long lineage and several code leaks have produced many related variants tracked under names like Gozi-ISFB and Dreambot.",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [
    "Ursnif",
    "Gozi-ISFB",
    "Dreambot",
    "ISFB"
  ],
  "enrichment_level": "curated_sourced",
  "faq": [
    {
      "@type": "Question",
      "name": "What is Ursnif?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "A banking trojan derived from the Gozi malware family, focused mainly on stealing banking credentials and other sensitive data."
      }
    },
    {
      "@type": "Question",
      "name": "What other names does Ursnif go by?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "It is tracked under names including Gozi, Gozi-ISFB, ISFB, and Dreambot, reflecting its shared code lineage and multiple variants."
      }
    },
    {
      "@type": "Question",
      "name": "How does Ursnif spread?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "MITRE documents distribution through automated exploit kits, spearphishing email attachments, and malicious links."
      }
    },
    {
      "@type": "Question",
      "name": "What does Ursnif do once it infects a machine?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "It is associated primarily with data theft, but certain variants add backdoors, spyware, and file-injection components for broader control."
      }
    },
    {
      "@type": "Question",
      "name": "Why are there so many Ursnif variants?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "The underlying Gozi/ISFB source code has leaked more than once, letting different actors build their own versions."
      }
    },
    {
      "@type": "Question",
      "name": "How can I reduce exposure to banking trojans like Ursnif?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Keep your browser and OS patched (which closes exploit-kit holes), be wary of unexpected email attachments and links, and use multi-factor authentication on financial accounts so stolen passwords alone are not enough."
      }
    },
    {
      "@type": "Question",
      "name": "Where is the authoritative source for Ursnif?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "MITRE ATT&CK's Ursnif entry (S0386), linked on this page, documents its observed techniques and references vendor research."
      }
    }
  ],
  "faq_count": 7,
  "mitre_attack": [
    "T1566.001",
    "T1185",
    "T1071.001",
    "T1055"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-06-09",
  "sources": [
    {
      "name": "MITRE ATT&CK: Ursnif (S0386)",
      "url": "https://attack.mitre.org/software/S0386"
    }
  ],
  "mitre_url": "https://attack.mitre.org/software/S0386",
  "target_industries": [
    "Global / Opportunistic"
  ],
  "motivation": "Opportunistic",
  "threat_actors": [
    "Unknown / Cybercriminal"
  ],
  "target_geographies": [
    "Global"
  ]
}