{
  "family": "bank",
  "sample_count": 2,
  "category": "ransomware",
  "description": "Bank (classified in antivirus detection telemetry under designations including Ransom:Win32/Bank, Ransom.Win32.Bank, and Win32/Bank) is a crypto-ransomware designed to locate, encrypt, and hold hostage high-value user documents, database stores, and system files. Disseminated across enterprise networks and consumer workstations via social engineering, phishing attachments, malicious drive-by downloads, or weaponized software cracks, Bank executes an initial reconnaissance phase upon system ingress. The binary evaluates host privileges, detects active hypervisors and sandbox environments to evade behavioral analysis, and establishes resilient autostart persistence by configuring registry keys under HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Run or registering background Windows services. Operational mechanics characteristic of this family include file system traversal, high-speed symmetric/asymmetric encryption, Volume Shadow Copy destruction via vssadmin, and extortion note display. Outbound communication is established with remote threat actor infrastructure to beacon operational status and receive tasking, posing significant security risks to data integrity and host availability.",
  "cta": "Published by the SystemHelpdesk Threat Intelligence Team.",
  "aliases": [
    "Ransom:Win32/Bank",
    "Ransom.Win32.Bank",
    "Win32/Bank"
  ],
  "enrichment_level": "curated_sourced",
  "faq": [
    {
      "@type": "Question",
      "name": "What is Ransom:Win32/Bank?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Bank is a ransomware threat designed to infiltrate Windows systems and execute unauthorized operations without user consent."
      }
    },
    {
      "@type": "Question",
      "name": "How does Bank compromise target systems?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "It commonly infiltrates systems via phishing emails, trojanized software installers, exploit kits, or unpatched vulnerabilities."
      }
    },
    {
      "@type": "Question",
      "name": "What persistence mechanisms does Bank utilize?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "It typically creates autostart entries in the Windows Registry (HKCU/HKLM Run keys), registers scheduled tasks, or installs hidden background services."
      }
    },
    {
      "@type": "Question",
      "name": "What risks does Bank pose to an enterprise?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "It can lead to credential theft, system manipulation, unauthorized remote access, data loss, or secondary malware delivery."
      }
    },
    {
      "@type": "Question",
      "name": "How can administrators detect and eliminate Bank?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Deploy modern EDR solutions with updated behavioral signatures, isolate infected endpoints, audit autostart persistence entries, and conduct full antimalware scans."
      }
    }
  ],
  "faq_count": 5,
  "mitre_attack": [
    "T1486",
    "T1490",
    "T1489",
    "T1547.001",
    "T1083"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-10-16",
  "mitre_attack_detail": [
    {
      "id": "T1111",
      "name": "Two-Factor Authentication Interception (Using Man-in-the-Browser web injects to steal OTPs)",
      "tactic": "Credential Access"
    },
    {
      "id": "T1056.001",
      "name": "Input Capture: Keylogging (Capturing credentials during login)",
      "tactic": "Credential Access"
    },
    {
      "id": "T1055",
      "name": "Process Injection (Injecting into web browsers to monitor traffic)",
      "tactic": "Defense Evasion"
    },
    {
      "id": "T1566.001",
      "name": "Phishing: Spearphishing Attachment (Primary delivery mechanism)",
      "tactic": "Initial Access"
    }
  ],
  "containment_steps": [
    "Isolate the infected endpoint IMMEDIATELY. Banking trojans are a primary precursor to enterprise ransomware deployment.",
    "Initiate a forced password reset for ALL accounts accessed from the infected machine, especially corporate banking and VPN credentials.",
    "Capture a live memory image (RAM dump) to extract the decrypted banking trojan modules, C2 lists, and targeted bank inject configurations.",
    "Notify the organization's financial institution to place holds or monitoring on accounts that may have been compromised."
  ],
  "what_to_avoid": [
    "Do not allow the user to log into ANY accounts while the machine is connected to the network, as the Man-in-the-Browser capability is active.",
    "Avoid treating this as a minor malware infection; the presence of a banking trojan indicates a severe, high-tier compromise."
  ],
  "target_industries": [
    "Healthcare",
    "Critical Infrastructure",
    "Enterprise"
  ],
  "motivation": "Financial Extortion",
  "threat_actors": [
    "Unknown / Cybercriminal"
  ],
  "target_geographies": [
    "Global"
  ],
  "attack_stage": [
    "defense_evasion",
    "impact"
  ],
  "ecosystem": [
    "windows_pe"
  ],
  "is_emerging": false,
  "sources": [
    {
      "name": "Microsoft Defender Threat Encyclopedia - Ransom:Win32/Bank",
      "url": "https://www.microsoft.com/en-us/wdsi/threats/malware-encyclopedia-description?Name=Ransom:Win32/Bank"
    },
    {
      "name": "Kaspersky Threat Intelligence - Ransom.Win32.Bank",
      "url": "https://threats.kaspersky.com/en/threat/"
    },
    {
      "name": "MITRE ATT&CK - Enterprise Techniques",
      "url": "https://attack.mitre.org/techniques/T1486/"
    }
  ],
  "target_platforms": [
    "Windows 11",
    "Windows 10",
    "Windows Server 2022",
    "Windows Server 2019"
  ]
}