{
  "family": "casbaneiro",
  "sample_count": 10,
  "category": "trojan",
  "description": "Casbaneiro (classified in antivirus detection telemetry under designations including Trojan:Win32/Casbaneiro, Trojan.Win32.Casbaneiro, and Win32/Casbaneiro) is a multi-stage trojan engineered to disguise itself as legitimate software, execute unauthorized commands, and coordinate with external command-and-control infrastructure. Disseminated across enterprise networks and consumer workstations via social engineering, phishing attachments, malicious drive-by downloads, or weaponized software cracks, Casbaneiro 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 deceptive executable masquerading, registry run key autostart, system telemetry gathering, and remote C2 beaconing. 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": [
    "Trojan:Win32/Casbaneiro",
    "Trojan.Win32.Casbaneiro",
    "Win32/Casbaneiro"
  ],
  "enrichment_level": "curated_sourced",
  "faq": [
    {
      "@type": "Question",
      "name": "What is Trojan:Win32/Casbaneiro?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Casbaneiro is a trojan threat designed to infiltrate Windows systems and execute unauthorized operations without user consent."
      }
    },
    {
      "@type": "Question",
      "name": "How does Casbaneiro 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 Casbaneiro 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 Casbaneiro 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 Casbaneiro?",
      "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": [
    "T1059.003",
    "T1027",
    "T1547.001",
    "T1071.001",
    "T1105"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-10-16",
  "mitre_attack_detail": [
    {
      "id": "T1102.001",
      "name": "Web Service: Dead Drop Resolver (Using YouTube/GitHub for C2 routing)",
      "tactic": "Command and Control"
    },
    {
      "id": "T1566.002",
      "name": "Phishing: Spearphishing Link (Fake Banking Pop-ups)",
      "tactic": "Credential Access"
    },
    {
      "id": "T1056.004",
      "name": "Input Capture: Credential API Hooking (Monitoring Window Titles)",
      "tactic": "Collection"
    },
    {
      "id": "T1059.001",
      "name": "Command and Scripting Interpreter: PowerShell (Initial Dropper)",
      "tactic": "Execution"
    },
    {
      "id": "T1547.001",
      "name": "Boot or Logon Autostart Execution: Registry Run Keys",
      "tactic": "Persistence"
    }
  ],
  "containment_steps": [
    "Isolate the endpoint immediately upon detecting the anomalous PowerShell execution or the 'Dead Drop Resolver' network traffic.",
    "Enforce a mandatory password reset for all financial accounts and internal portals accessed from the infected machine, as the overlay attacks are highly effective.",
    "Analyze the PowerShell dropper to extract the specific YouTube URL or Pastebin link used for C2 routing; block the resolved IP address at the firewall.",
    "Perform a deep forensic scan to locate and remove the heavily obfuscated DLL payloads hidden in the user profile directory."
  ],
  "what_to_avoid": [
    "Do not assume the infection is standard adware; Casbaneiro's overlays are specifically designed to steal high-value banking credentials.",
    "Avoid relying solely on DNS blacklists, as the Dead Drop Resolver technique completely bypasses them."
  ],
  "target_industries": [
    "Global / Opportunistic"
  ],
  "motivation": "Opportunistic",
  "threat_actors": [
    "Unknown / Cybercriminal"
  ],
  "target_geographies": [
    "Global"
  ],
  "attack_stage": [
    "execution",
    "persistence"
  ],
  "ecosystem": [
    "windows_pe"
  ],
  "is_emerging": false,
  "sources": [
    {
      "name": "Microsoft Defender Threat Encyclopedia - Trojan:Win32/Casbaneiro",
      "url": "https://www.microsoft.com/en-us/wdsi/threats/malware-encyclopedia-description?Name=Trojan:Win32/Casbaneiro"
    },
    {
      "name": "Kaspersky Threat Intelligence - Trojan.Win32.Casbaneiro",
      "url": "https://threats.kaspersky.com/en/threat/"
    },
    {
      "name": "MITRE ATT&CK - Enterprise Techniques",
      "url": "https://attack.mitre.org/techniques/T1059.003/"
    }
  ],
  "target_platforms": [
    "Windows 11",
    "Windows 10",
    "Windows 7"
  ]
}