{
  "family": "armadillo",
  "sample_count": 4,
  "category": "ransomware",
  "description": "Armadillo (classified in antivirus detection telemetry under designations including Ransom:Win32/Armadillo, Ransom.Win32.Armadillo, and Win32/Armadillo) 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, Armadillo 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/Armadillo",
    "Ransom.Win32.Armadillo",
    "Win32/Armadillo"
  ],
  "enrichment_level": "curated_sourced",
  "faq": [
    {
      "@type": "Question",
      "name": "What is Ransom:Win32/Armadillo?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Armadillo is a ransomware threat designed to infiltrate Windows systems and execute unauthorized operations without user consent."
      }
    },
    {
      "@type": "Question",
      "name": "How does Armadillo 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 Armadillo 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 Armadillo 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 Armadillo?",
      "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": "T1027.002",
      "name": "Obfuscated Files or Information: Software Packing (Armadillo)",
      "tactic": "Defense Evasion"
    },
    {
      "id": "T1622",
      "name": "Debugger Evasion (Nanomites, Anti-dumping)",
      "tactic": "Defense Evasion"
    },
    {
      "id": "T1055",
      "name": "Process Injection (Parent/Child debugging for execution)",
      "tactic": "Defense Evasion"
    },
    {
      "id": "T1204.002",
      "name": "User Execution: Malicious File",
      "tactic": "Execution"
    }
  ],
  "containment_steps": [
    "Isolate the endpoint to prevent the hidden, injected secondary payload from communicating with its C2 server or exfiltrating data.",
    "Submit the obfuscated binary to a highly sophisticated malware sandbox that is specifically hardened against anti-VM and anti-debugging techniques to observe behavioral IoCs.",
    "Use specialized, automated unpacking tools or memory forensics (e.g., Volatility) to attempt to dump the memory of the running process to extract the final payload after the Armadillo stub has decrypted it.",
    "Block the sender IP and domain from the initial phishing email that delivered the packed executable."
  ],
  "what_to_avoid": [
    "Do not assume a file is safe just because static AV engines report it clean; commercial packers like Armadillo are designed specifically to bypass static analysis.",
    "Avoid attempting to manually reverse engineer heavily obfuscated Armadillo files without extensive experience and specialized deobfuscation scripts, as the 'Nanomites' will break standard debugging."
  ],
  "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/Armadillo",
      "url": "https://www.microsoft.com/en-us/wdsi/threats/malware-encyclopedia-description?Name=Ransom:Win32/Armadillo"
    },
    {
      "name": "Kaspersky Threat Intelligence - Ransom.Win32.Armadillo",
      "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"
  ]
}