{ "family": "doser", "sample_count": 1, "category": "trojan", "description": "

Executive Summary

\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

Infection Vector and Technical Capabilities

\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\n\n

Threat Assessment

\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

Incident Response and Remediation

\n", "cta": "Published by the SystemHelpdesk team.", "aliases": [ "HackTool.Doser", "Trojan.DDoS.Doser", "Win32/Doser" ], "enrichment_level": "expert-seo", "faq": [ { "@type": "Question", "name": "What is Doser and what threat category does it belong to?", "acceptedAnswer": { "@type": "Answer", "text": "Doser is classified as a Trojan. 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 Doser establish persistence and evade defensive controls?", "acceptedAnswer": { "@type": "Answer", "text": "Doser 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 Doser compromise?", "acceptedAnswer": { "@type": "Answer", "text": "Security teams responding to Doser 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 secondary payloads and staging behaviors are commonly associated with HackTool.Doser?", "acceptedAnswer": { "@type": "Answer", "text": "HackTool.Doser frequently operates as a loader or dropper designed to establish a foothold before downloading and executing secondary high-impact malware payloads. Depending on the threat actor's objectives, these dropped modules can range from ransomware and banking injects to modular infostealers and remote management backdoors." } }, { "@type": "Question", "name": "How can security operations teams effectively detect and hunt for HackTool.Doser across enterprise endpoints?", "acceptedAnswer": { "@type": "Answer", "text": "Defenders should hunt for HackTool.Doser by deploying behavioral endpoint detection and response (EDR) rules that monitor suspicious process spawning (such as cmd.exe or powershell.exe spawned from office documents or temporary directories), anomalous outbound network connections from non-browser binaries, and unauthorized modifications to Windows Run keys and scheduled task registries." } } ], "faq_count": 5, "mitre_attack": [ "T1498.001", "T1498.002", "T1059" ], "cisa_advisory": null, "last_updated": "2026-10-15", "type": "DoS Tool / Trojan", "target_industries": [ "Global / Opportunistic" ], "motivation": "Opportunistic", "threat_actors": [ "Unknown / Cybercriminal" ], "target_geographies": [ "Global" ], "attack_stage": [ "execution", "persistence" ], "ecosystem": [ "windows_pe" ], "is_emerging": false, "mitre_attack_detail": [ { "id": "T1498.001", "name": "Network Denial of Service: Direct Network Flood", "tactic": "Impact" }, { "id": "T1498.002", "name": "Network Denial of Service: Reflection Amplification (Used for Spam/DDoS)", "tactic": "Impact" }, { "id": "T1059", "name": "Command and Scripting Interpreter", "tactic": "Execution" } ], "containment_steps": [ "Sever network connectivity for the flagged endpoint to terminate persistent command-and-control (C2) communication channels and stop Doser from retrieving secondary stage payloads.", "Capture process memory triage to detect and terminate malicious threads injected by Doser into legitimate system processes such as explorer.exe or svchost.exe.", "Audit Windows Registry Run keys (HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Run) and Task Scheduler entries to locate and purge Doser persistence hooks.", "Deploy updated enterprise EDR detection signatures and conduct an out-of-band endpoint scan to isolate dropped binaries and staged payloads.", "Rotate all credentials, domain user passwords, and session cookies active on the system during the Doser execution timeframe." ], "what_to_avoid": [ "Do not assume the incident is resolved simply because an antivirus tool removed the initial Doser dropper; always verify that secondary payloads and persistence hooks have been eradicated.", "Avoid logging in with Domain Admin or privileged credentials on a machine suspected of running Doser until memory triage is complete.", "Do not delay host isolation; automated lateral movement and credential dumping can occur within minutes of initial execution." ], "target_platforms": [ "Windows 11", "Windows 10", "Windows 7" ] }