{ "family": "malxmr", "sample_count": 1, "category": "advanced_threat", "description": "

Executive Summary

\nMalXMR is a pervasive and highly optimized malicious cryptocurrency miner (cryptojacking malware) specifically engineered to illicitly mine Monero (XMR). By stealthily hijacking the CPU resources of infected endpoints and servers, MalXMR generates cryptocurrency for its operators, resulting in severe performance degradation, hardware wear, and dramatically increased power consumption for the victim organization.\n\n

Technical Implementation and Execution

\nMalXMR is frequently deployed as a secondary payload by initial access brokers, dropped by exploit kits targeting unpatched vulnerabilities (such as ProxyLogon or Log4Shell on servers), or distributed via malicious spam campaigns.\n\nUpon execution, MalXMR focuses entirely on stealth and maximum CPU utilization:\n\n\n

Operational Impact

\nMalXMR causes significant operational disruption. Infected machines suffer from extreme latency, overheating, and frequent crashes. In enterprise environments, widespread cryptojacking infections dramatically increase cloud computing costs (if AWS/Azure instances are infected) and accelerate on-premise hardware degradation.\n\n

Detection and Remediation

\n", "cta": "Published by the SystemHelpdesk team.", "aliases": [ "CoinMiner.MalXMR", "Trojan.MalXMR", "Riskware.BitCoinMiner" ], "enrichment_level": "expert-seo", "faq": [ { "@type": "Question", "name": "What is Malxmr and what threat category does it belong to?", "acceptedAnswer": { "@type": "Answer", "text": "Malxmr is classified as a Advanced Threat. 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 Malxmr establish persistence and evade defensive controls?", "acceptedAnswer": { "@type": "Answer", "text": "Malxmr 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 Malxmr compromise?", "acceptedAnswer": { "@type": "Answer", "text": "Security teams responding to Malxmr 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 lateral movement and credential access tactics does CoinMiner.MalXMR leverage in enterprise intrusions?", "acceptedAnswer": { "@type": "Answer", "text": "CoinMiner.MalXMR frequently utilizes privileged account harvesting techniques such as LSASS memory dumping, Kerberoasting, and token impersonation to escalate privileges. Once administrative credentials are acquired, it pivots across the victim network utilizing living-off-the-land binaries (LOLBins) such as WMI, PowerShell remoting, and PsExec, or abuses remote desktop protocols (RDP) to reach critical internal repositories and domain controllers." } }, { "@type": "Question", "name": "How does CoinMiner.MalXMR maintain covert communications and evade perimeter network monitoring?", "acceptedAnswer": { "@type": "Answer", "text": "CoinMiner.MalXMR often relies on multi-stage command and control (C2) architectures utilizing encrypted protocols over standard web ports (HTTPS/443 or DNS tunneling) to blend in with legitimate enterprise network traffic. Many variants incorporate proxy networks, domain fronting, or cloud services (such as Microsoft Graph API, Google Drive, or Telegram) to masquerade C2 channels, bypassing traditional signature-based egress filtering." } } ], "faq_count": 5, "mitre_attack": [ "T1496", "T1055", "T1059" ], "cisa_advisory": null, "last_updated": "2026-10-15", "type": "Cryptominer", "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": "T1496", "name": "Resource Hijacking (The core function of mining Monero cryptocurrency)", "tactic": "Impact" }, { "id": "T1055", "name": "Process Injection", "tactic": "Defense Evasion" }, { "id": "T1059", "name": "Command and Scripting Interpreter", "tactic": "Execution" } ], "containment_steps": [ "Enforce forensic network isolation on all suspected endpoints while maintaining an out-of-band telemetry conduit to capture live Malxmr adversary activity.", "Perform full memory dumps across identified staging nodes to extract memory-only implants, kernel rootkit hooks, and decrypted Malxmr C2 infrastructure IP/domain lists.", "Review Active Directory domain controller authentication logs for anomalous Kerberos ticket requests (Pass-the-Ticket, Golden Ticket) and unauthorized DCSync operations associated with Malxmr.", "Block all confirmed C2 domains, dynamic DNS endpoints, and proxy IP addresses across perimeter firewalls, proxies, and DNS security gateways.", "Conduct an enterprise-wide sweep across surrounding subnets for secondary webshells, WMI event subscriptions, or remote execution tooling left behind by Malxmr operators." ], "what_to_avoid": [ "Do not assume the incident is resolved simply because an antivirus tool removed the initial Malxmr 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 Malxmr 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 Server 2022", "Windows Server 2019" ] }