{
  "family": "tick",
  "sample_count": 1,
  "category": "backdoor",
  "description": "<h3>Executive Summary</h3>\nTick (also known as Bronze Butler, REDBALDknight, or Stalker Panda) is a highly sophisticated Advanced Persistent Threat (APT) group believed to be operating out of East Asia. Active since at least 2006, Tick primarily targets government agencies, defense contractors, heavy industry, and high-tech manufacturing sectors, heavily focusing its operations on targets in Japan and South Korea. Their primary objective is long-term cyber espionage and the exfiltration of highly sensitive intellectual property.\n\n<h3>Tactics, Techniques, and Procedures (TTPs)</h3>\nTick is characterized by its patience, advanced evasion techniques, and the use of a diverse arsenal of custom-developed malware alongside repurposed open-source tools.\n\nKey aspects of Tick's operational playbook include:\n<ul>\n<li><strong>Initial Access:</strong> The group frequently relies on zero-day vulnerabilities in regional enterprise software (such as popular Japanese asset management solutions) or highly targeted spear-phishing emails utilizing exploit-laden Office documents.</li>\n<li><strong>Custom Malware Arsenal:</strong> Tick deploys a variety of proprietary malware families, including <strong>Daserf</strong> (a sophisticated backdoor used for lateral movement and command execution), <strong>Minzen</strong> (a downloader), <strong>Datper</strong> (a RAT), and <strong>Xxmm</strong>. These tools are heavily obfuscated and frequently updated to evade signature-based detection.</li>\n<li><strong>Living off the Land (LotL):</strong> To maintain absolute stealth during lateral movement and data exfiltration, Tick operators heavily utilize legitimate administrative tools (like PowerShell, Windows Management Instrumentation (WMI), and PsExec) and legitimate cloud storage services to exfiltrate stolen data, blending their activities with normal administrative traffic.</li>\n</ul>\n\n<h3>Threat Assessment</h3>\nAn intrusion by the Tick APT group is a critical, \"nation-state level\" security incident. Their prolonged dwell times and focus on high-value intellectual property mean that a successful breach often results in devastating strategic and economic damage to the targeted organization.\n\n<h3>Defense and Resilience Strategies</h3>\n<ul>\n<li><strong>Behavioral EDR and Threat Hunting:</strong> Defending against Tick requires mature EDR capabilities and active threat hunting. Security teams must monitor for anomalous usage of administrative tools (LotL techniques), unusual WMI queries, and unexpected lateral movement across the network.</li>\n<li><strong>Vulnerability Management:</strong> Given their history of exploiting regional enterprise software, organizations must maintain strict, accelerated patch management protocols, particularly for edge devices and specialized corporate applications.</li>\n<li><strong>Network Segmentation and DLP:</strong> Implement rigorous network segmentation to contain potential breaches. Deploy robust Data Loss Prevention (DLP) solutions to monitor for the bulk extraction of sensitive documents or CAD files to unauthorized external or cloud storage endpoints.</li>\n</ul>",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [
    "APT.Tick",
    "Bronze Butler",
    "REDBALDknight",
    "Stalker Panda"
  ],
  "enrichment_level": "expert-seo",
  "faq": [
    {
      "@type": "Question",
      "name": "What is Tick and what threat category does it belong to?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Tick is classified as a Backdoor. Documented across security telemetry, it is engineered to execute unauthorized operations, establish persistent footholds on target endpoints, and facilitate malicious campaigns targeting enterprise and individual environments."
      }
    },
    {
      "@type": "Question",
      "name": "How does Tick establish persistence and evade defensive controls?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Tick typically establishes persistence through registry run keys, scheduled tasks, or service installations, while evading signature-based antivirus solutions through code obfuscation, memory injection, or anti-analysis sandbox checks."
      }
    },
    {
      "@type": "Question",
      "name": "What are the essential incident response steps for mitigating a Tick compromise?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Security teams responding to Tick should immediately isolate affected endpoints from the network, perform memory triage to capture volatile forensic artifacts, audit registry and startup persistence mechanisms, revoke exposed user credentials, and restore systems from verified, clean backups."
      }
    },
    {
      "@type": "Question",
      "name": "What remote administrative and surveillance capabilities does APT.Tick provide to threat actors?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "As an interactive backdoor and remote access tool, APT.Tick grants operators comprehensive control over the victim host. Common surveillance and management modules include real-time keystroke logging, desktop screen capture, remote VNC streaming, webcam and audio recording, arbitrary shell command execution, reverse proxy pivoting, and bidirectional file transfer capabilities."
      }
    },
    {
      "@type": "Question",
      "name": "How does APT.Tick traverse firewalls and sustain resilient command-and-control (C2) connections?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "APT.Tick establishes persistent outbound TCP or TLS connections back to threat actor infrastructure, effectively bypassing inbound firewall filtering. To maintain connection resilience against IP takedowns, variants frequently employ dynamic DNS services, fallback command servers, encrypted dead-drop resolvers on social platforms, or DNS over HTTPS (DoH) querying."
      }
    }
  ],
  "faq_count": 5,
  "mitre_attack": [
    "T1192",
    "T1059.001",
    "T1047",
    "T1567.002"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-10-15",
  "type": "APT Group",
  "target_industries": [
    "Global / Opportunistic"
  ],
  "motivation": "Opportunistic",
  "threat_actors": [
    "Unknown / Cybercriminal"
  ],
  "target_geographies": [
    "Global"
  ],
  "attack_stage": [
    "persistence",
    "command_and_control",
    "remote_access"
  ],
  "ecosystem": [
    "windows_pe"
  ],
  "is_emerging": false,
  "mitre_attack_detail": [
    {
      "id": "T1192",
      "name": "Spearphishing Link",
      "tactic": "Initial Access"
    },
    {
      "id": "T1059.001",
      "name": "Command and Scripting Interpreter: PowerShell (Used in infection chain)",
      "tactic": "Execution"
    },
    {
      "id": "T1047",
      "name": "Windows Management Instrumentation",
      "tactic": "execution"
    },
    {
      "id": "T1567.002",
      "name": "Exfiltration to Cloud Storage",
      "tactic": "exfiltration"
    }
  ],
  "containment_steps": [
    "Immediately isolate the compromised host from internal LAN and WAN environments to cut off interactive remote shell sessions established by Tick.",
    "Inspect active socket listeners and outbound established network connections ('netstat -ano') to identify and sever covert TCP/UDP channels used by Tick.",
    "Scan Windows Services, Scheduled Tasks, and Startup folders to locate and eliminate persistent backdoor listeners configured by Tick.",
    "Invalidate all active VPN profiles, local administrator credentials, and session tokens that may have been harvested by the Tick operator.",
    "Re-image the affected host using a validated golden image prior to reconnecting it to enterprise network segments."
  ],
  "what_to_avoid": [
    "Do not attempt to interact with or send messages through the Tick remote terminal, as this alerts the attacker and may cause them to execute destructive anti-forensic commands.",
    "Avoid relying solely on static file signatures, as Tick payloads frequently execute reflectively in memory without writing binaries to disk."
  ],
  "target_platforms": [
    "Windows 11",
    "Windows 10",
    "Windows Server 2022",
    "Windows Server 2019"
  ]
}