{
  "family": "zoldon",
  "sample_count": 1,
  "category": "ransomware",
  "description": "<h3>Executive Summary</h3>\nZoldon is a malicious Trojan designed to covertly infiltrate Windows systems, establish persistence, and conscript the infected machine into a larger, centrally controlled botnet. Once integrated, the compromised host is utilized to facilitate distributed denial-of-service (DDoS) attacks, relay spam campaigns, or act as a proxy for further malicious network activity.\n\n<h3>Infection Vector and Technical Capabilities</h3>\nZoldon is typically distributed via malspam campaigns containing deceptive attachments, exploit kits hosted on compromised websites, or bundled with pirated software downloaded from untrustworthy sources.\n\nUpon successful execution, Zoldon prioritizes stealth and network integration:\n<ul>\n<li><strong>System Hooking and Persistence:</strong> The trojan deeply embeds itself within the operating system, often injecting its code into legitimate processes (like `explorer.exe` or `svchost.exe`) to hide from task managers and ensure it launches automatically upon system boot (modifying `Run` keys or creating hidden services).</li>\n<li><strong>Botnet Command and Control:</strong> Zoldon silently connects to a remote Command and Control (C2) server. It registers the infected machine, transmits basic system profiling data, and awaits commands from the botmaster.</li>\n<li><strong>Malicious Execution:</strong> Based on C2 instructions, the infected machine may participate in coordinated DDoS attacks against external targets, download and execute secondary malware payloads, or open hidden proxy ports to allow attackers to route traffic through the corporate network.</li>\n</ul>\n\n<h3>Threat Assessment</h3>\nA Zoldon infection is a severe security incident. While it may not immediately encrypt files like ransomware, it compromises the integrity of the endpoint and weaponizes the corporate network. It consumes significant network bandwidth and exposes the organization to liability if the infrastructure is used to attack third parties.\n\n<h3>Remediation and Eradication</h3>\n<ul>\n<li><strong>Network Isolation and C2 Blocking:</strong> Immediately isolate the infected endpoint from the LAN. Analyze firewall logs to identify the outbound C2 IP addresses and block them at the perimeter to sever the botmaster's control.</li>\n<li><strong>Behavioral Analysis (EDR):</strong> Utilize Endpoint Detection and Response (EDR) to identify the specific processes Zoldon has injected into and to trace any secondary payloads it may have downloaded.</li>\n<li><strong>Complete Re-imaging:</strong> Due to the deep system hooking and the potential for secondary backdoor installations, attempting to manually \"clean\" a botnet node is highly risky. The most secure remediation is a complete bare-metal wipe and re-image from a trusted corporate baseline.</li>\n</ul>",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [
    "Trojan.Zoldon",
    "Botnet.Zoldon",
    "Win32/Zoldon"
  ],
  "enrichment_level": "insufficient_information",
  "faq": [],
  "faq_count": 0,
  "mitre_attack": [
    "T1055",
    "T1105",
    "T1547.001",
    "T1498"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-07-02T07:01:27Z",
  "type": "Trojan / Botnet",
  "target_industries": [
    "Global / Opportunistic"
  ],
  "motivation": "Opportunistic",
  "threat_actors": [
    "Unknown / Cybercriminal"
  ],
  "target_geographies": [
    "Global"
  ]
}