Xmrminer
Overview
Executive Summary
XMRig (often detected generally as XMRMiner or CoinMiner.XMR) is a legitimate, open-source Monero (XMR) CPU/GPU miner that has been overwhelmingly weaponized by threat actors. When deployed maliciously, it operates as a Cryptojacking Trojan, silently exhausting the compromised host's processing power to mine cryptocurrency for the attacker, leading to severe hardware degradation, massive power consumption, and operational instability.Infection Vector and Technical Capabilities
Malicious XMRMiner variants are distributed through nearly every available vector: bundled in pirated software, dropped by initial access trojans (like Emotet or Trickbot), or deployed laterally across corporate networks by exploiting unpatched vulnerabilities (like EternalBlue or Log4j). Once resident on a host, the weaponized miner prioritizes persistence and evasion:- Resource Exhaustion (Mining): The core payload maxes out the CPU (and sometimes the GPU) to compute cryptographic hashes for the Monero network. These hashes are sent to a mining pool controlled by the attacker.
- Defense Evasion: Malicious variants are often heavily modified to avoid detection. They may inject their mining threads into legitimate processes (like `svchost.exe` or `notepad.exe`) using process hollowing. Many variants actively monitor the active process list; if the user opens Task Manager or Process Explorer, the malware temporarily suspends mining to hide the 100% CPU utilization spike.
- Persistence: The miner establishes persistence using Windows Management Instrumentation (WMI) event subscriptions, hidden Scheduled Tasks, or by masquerading as a critical Windows Service.
Threat Assessment
While Cryptominers do not actively destroy data, they are a critical security threat. A cryptomining infection guarantees that an attacker has remote code execution (RCE) on the endpoint. Furthermore, the extreme load on the hardware leads to system freezing, application crashes, and reduced hardware lifespans due to severe thermal stress.Incident Response and Remediation
- Performance Monitoring: Utilize enterprise monitoring tools to identify endpoints exhibiting sustained, unexplained CPU/GPU utilization or high battery drain.
- Endpoint Eradication: Isolate the endpoint and perform a deep system scan. Due to the use of process injection and WMI persistence, standard removal often fails; a dedicated offline scan or complete re-imaging of the machine may be required.
- Network Blocking: Block outbound traffic to known cryptocurrency mining pools and Stratum protocol ports (often TCP 3333, 4444, 7777, 8888) at the perimeter firewall.
Known aliases
Threat reports may refer to this family under multiple names:
MITRE ATT&CK Techniques
This family has been observed using the following ATT&CK techniques: T1496 T1055 T1562.001 T1546.003
Generated Detections (Boilerplate)
These YARA and Sigma rules are auto-generated based on the family name and aliases. They must be heavily tuned before deployment in a production environment.
YARA Rule
rule MALWARE_WIN_XMRMINER {
meta:
description = "Detects Xmrminer (trojan)"
author = "SystemHelpdesk Boilerplate Generator"
date = "2026-07-06"
strings:
$s1 = "xmrminer" ascii wide nocase
$s2 = "coinminer.xmr" ascii wide nocase
$s3 = "trojan.xmrig" ascii wide nocase
$s4 = "riskware.miner" ascii wide nocase
condition:
uint16(0) == 0x5a4d and any of them
}Sigma Rule
title: Suspicious Xmrminer Activity
id: bc9614d6e08c563a634ff85d943b0a76
status: experimental
description: Detects generic indicators of the xmrminer malware family.
logsource:
category: process_creation
product: windows
detection:
selection:
Image|endswith:
- '\cmd.exe'
- '\powershell.exe'
CommandLine|contains:
- "*xmrminer*"
- "*coinminer.xmr*"
- "*trojan.xmrig*"
- "*riskware.miner*"
condition: selection
level: mediumReferences & External Analysis
- Search "xmrminer" on VirusTotal (External Analysis)
Frequently Asked Questions
How do I remove the Xmrminer Trojan from Windows?
Manual removal of Xmrminer is highly discouraged as it may leave persistence mechanisms intact. We recommend disconnecting the device from the internet and utilizing a professional incident response service or enterprise-grade EDR software to conduct a full forensic sweep.
Is Xmrminer a virus or a Trojan?
Xmrminer is classified as a Trojan. Unlike traditional viruses that infect files, modern malware like Xmrminer typically operates as a standalone payload designed to compromise systems, steal data, or deploy secondary stage implants.
What are the main symptoms of a Xmrminer infection?
Symptoms of Xmrminer can include unexpected system slowness, unauthorized outbound network traffic to unknown IP addresses, disabled security software, and suspicious background processes running from AppData or Temp directories.
Related Families (Category: trojan)
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Protect Your Network Against Trojans
Want to prevent Xmrminer and similar threats from compromising your organization? Read our comprehensive defensive guide: Banking Trojan Protection.
Machine-readable
Get this profile as JSON: https://jordan123234-malware-families-explorer.static.hf.space/api/xmrminer.json
Ecosystem & Interactive Environments
This profile is part of the Malware Families Catalog, a public dataset of 2,899 malware families. The catalog is also published across our ecosystem: Hugging Face, Kaggle, Zenodo, Replit, StackBlitz, CodeSandbox, and CodePen.