{
  "family": "doser",
  "sample_count": 1,
  "category": "trojan",
  "description": "<h3>Executive Summary</h3>\nDoser is a classification assigned to a specific category of malicious utilities (HackTools) and Trojans designed to execute Denial of Service (DoS) or Distributed Denial of Service (DDoS) attacks. Unlike stealthy malware designed for espionage or data theft, Doser's sole objective is brute-force disruption: overwhelming a target web server, network, or IP address with a massive flood of anomalous traffic, rendering the service unavailable to legitimate users.\n\n<h3>Infection Vector and Technical Capabilities</h3>\nDoser tools are often standalone executables downloaded manually by \"script kiddies\" from hacking forums. However, in an enterprise context, a \"Doser\" detection often indicates that a corporate endpoint has been silently compromised and conscripted into a larger botnet, tasked with participating in coordinated DDoS attacks against external targets.\n\nUpon execution, Doser prioritizes rapid, high-volume network activity:\n<ul>\n<li><strong>Traffic Generation:</strong> The malware is engineered to generate a massive volume of network packets. This can take various forms depending on the target, including UDP floods, TCP SYN floods (exhausting the server's connection state tables), or HTTP GET/POST floods (exhausting web server application resources).</li>\n<li><strong>Command and Control (Botnet Clients):</strong> If the Doser is part of a botnet, it runs silently in the background, maintaining a persistent connection to a C2 server (often via IRC or HTTP). When the botmaster issues a command, the infected machine immediately begins attacking the specified target IP address.</li>\n<li><strong>Resource Exhaustion:</strong> The sheer volume of packets generated by a Doser attack often exhausts the outbound bandwidth of the infected host's network, causing secondary disruptions for legitimate users on the same LAN.</li>\n</ul>\n\n<h3>Threat Assessment</h3>\nThe presence of Doser malware is a significant security incident. If an internal machine is participating in a DDoS attack, the organization's public IP address will likely be blacklisted by external ISPs and security vendors. Furthermore, the infection indicates a fundamental failure of endpoint security, as a threat actor was able to successfully execute arbitrary code.\n\n<h3>Incident Response and Remediation</h3>\n<ul>\n<li><strong>Immediate Network Isolation:</strong> The infected machine must be immediately isolated to halt the outbound flood of malicious traffic and prevent further participation in the DDoS attack.</li>\n<li><strong>Network Traffic Analysis:</strong> Responders should analyze firewall and NetFlow logs to identify the specific C2 server the malware was communicating with, and block that infrastructure at the perimeter.</li>\n<li><strong>Endpoint Eradication:</strong> Utilize enterprise EDR to terminate the Doser process and remove any associated persistence mechanisms (Run keys, Scheduled Tasks). Because botnet clients are often bundled with info-stealers, a thorough forensic sweep for secondary payloads is mandatory.</li>\n</ul>",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [
    "HackTool.Doser",
    "Trojan.DDoS.Doser",
    "Win32/Doser"
  ],
  "enrichment_level": "insufficient_information",
  "faq": [],
  "faq_count": 0,
  "mitre_attack": [
    "T1498.001",
    "T1498.002",
    "T1059"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-07-01T17:40:52Z",
  "type": "DoS Tool / Trojan",
  "target_industries": [
    "Global / Opportunistic"
  ],
  "motivation": "Opportunistic",
  "threat_actors": [
    "Unknown / Cybercriminal"
  ],
  "target_geographies": [
    "Global"
  ]
}