Cmd.exe Virus ⛏️ (Coin Miner Trojan) Removal

Written by Robert Bailey
Cmd.exe process comes from a harmful application that can properly be identified as a coin miner trojan virus. That malware form uses your hardware to mine cryptocurrencies, generally – Monero or DarkCoin1. It makes your system roughly unfunctional due to high CPU usage.
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What is Cmd.exe process?

Cmd.exe is a malicious process created by coin miner virus

As I have actually specified in the previous paragraph, Cmd.exe is a coin miner virus. The names of the .exe file can be diverse, but the consequences are generally the same. Because coin miners aim at cryptocurrency mining, they use all available hardware capacity of your personal computer to run this process. This malware does not pay attention to the fact that you may need to use your desktop for other tasks – it will consistently take over 80% of your CPU power.

Cmd.exe Windows Process

Cmd.exe – Very high CPU and GPU use

Besides CPU utilization, some of the coin miners additionally use GPU power for their operations. In that situation, you will struggle also to see the mouse arrow moving – GPU is usually used on 100%. It is not as essential as processor for system work, so Cmd.exe coin miner viruses do not waste time on trifles and utilize all of it. It sometimes can lead to bad results.

Shortly about cryptocurrency mining

Cryptocurrency mining is a term that means the action of calculating the transaction block hash. That is a integral part of anything based on the blockchain technology. Since this operation takes a lot of calculations, a very strong PC is required. Exactly, the GPU is better for this task, because they have more cores available. Cryptocurrency mining farms usually consist of dozens of GPUs to complete their task efficiently. Such systems are not usable for “classic” purposes, like gaming or browsing the Web. Fraudsters who make profit via this coin miner use someones’ PCs instead, even if they are used for the regular activity.2

List of the typical coin miner symptoms

  • Extremely bad performance
  • CPU/GPU cooler fan creates a lot of noise
  • High temperature of the device (for laptops)
  • 80-90% consumption of CPU/GPU resources by an unknown process
  • Microsoft Defender is not working
  • How dangerous is the Cmd.exe miner?

    Coin miners does not deal damage to your files. However, they make a lot of unpleasant things with the whole system

    Initially, Cmd.exe malware makes your PC overloaded. It is unable to run your applications now, as all CPU power is consumed by a malware. That malware does not care for your necessities, all it pays attention to is making money on you. Even if you are patient, and you waited until browser is open, you will likely experience extremely slow performance. Pages can open up for years, any sort of logins will take about a minute – just a nightmare for a person that works online.

    Cmd.exe Technical Summary.

    File NameCmd.exe
    TypeTrojan Coin Miner
    Detection NameTrojan:Win32/CoinMiner
    Distribution MethodSoftware bundling, Intrusive advertisement, redirects to shady sites etc.
    Similar behaviorWirelesskb850notificationservice.exe, Skypeapp.exe, Skypebackgroundhost.exe
    RemovalDownload and install GridinSoft Anti-Malware for automatic Cmd.exe removal.

    “Visible” damage is not a solitary negative activity coin miners perform to your computer. Cmd.exe coin miner likewise deals damage to your OS. To complete all malevolent operations effectively, it wrecks the protection mechanisms of your system. You will likely see your Microsoft Defender disabled – malware stops it to prevent detection. If you open the HOSTS file, you will likely see a number of new notes – they are brought in by this trojan miner to connect your computer to a malicious cryptomining network. All these adjustments shall be thrown back to the original in the process of PC recovery.

    Hardware effects of coin miner activity

    Besides slowing down your computer, running at peak power for a long period of time may trigger damage to your device as well as increase electricity bills. Hardware elements are designed to easily get along with high load, but they can do so only in case when they are in a good shape.

    Tiny and well-protected processor cooling system is not very easy to broke. Meanwhile, GPUs have large and easy-to-access fans, which can be easily cracked if affected while working, for instance, by the user much earlier before the coin-miner injection. Malfunctioning cooling system, together with the extremely high load caused by Cmd.exe can easily lead to graphic processing unit failure3. GPUs are also prone to have increased wearing when utilized for crypto mining. It is likely an unwanted case when the performance of your GPU decreases on 20-30% just after several weeks of being exploited in such a way.

    How did I get Cmd.exe coin miner virus?

    Coin miners are spread through different ways, but their main sources are malicious banners and programs from dubious sources

    Coin miners are the most widespread malevolent programs among “major” malware. Adware frequently serves as a carrier for Cmd.exe malware infiltration: it shows you the banners, which have a link to malware downloading. Sure, this abstract “malware” can belong to any type – another adware, spyware, rogue or backdoor. But the statistics say that about 30% of all malware spread with the malicious banners are coin miners – and Cmd.exe is right among them.

    Unwanted banners adware

    The example of malicious banners you can see in the Internet

    Another way you could get this thing on your computer is by downloading it from the untrustworthy web page as a part of a program. People who spread hacked variants of popular programs (which do not demand the license key) have small chances to make money. Therefore, there is a huge lure to include malware to the final package of the hacked application and get a coin for each setup. Before criticizing these individuals for hacking and malware spreading, ask yourself – is it OK to avoid buying the program in such a way? It is more affordable to pay $20-$30 one time than to pay a much greater sum for antivirus program as well as new parts for your PC.

    How to remove the Cmd.exe miner from my PC?

    The best way to get rid of this coin miner virus is to use anti-malware software

    Eliminating such a virus requires using specific software. Proper security tool must have high performance at scanning and also be lightweight – in order to create no problems with usage even on weak computers. Additionally, it is better to have proactive protection in your security solution – to prevent the virus even before it starts. Microsoft Defender lacks these features for various reasons. That’s why I’d suggest you to use a third-party anti-malware program for that purpose. GridinSoft Anti-Malware is an ideal option that fits each of the mentioned features.4

    Before the virus removal, it is important to boot your Windows into Safe Mode with Networking. Since Cmd.exe miner consumes a lot of processor power, it is required to halt it before launching the security program. Otherwise, your scan will last for years, even though the GridinSoft program is pretty lightweight.

    Booting the PC into Safe Mode with Networking

    Press the Start button, then choose Power, and click on Reboot while holding the Shift key on the keyboard.

    Boot into Windows Safe Mode

    Windows will reboot into recovery mode. In that mode, choose Troubleshoot→ Startup Settings→ Safe Mode with Networking. Press the corresponding button on your keyboard to choose that option.

    windows safe mode boot option with command prompt

    When your PC is in Safe Mode, all third-party programs, just like the majority of non-crucial operating system components, are not launched with the system start. That allows you to clean the PC without dealing with high CPU usage of the coin miner.

    Remove Cmd.exe coin miner virus with GridinSoft Anti-Malware

    Download and install GridinSoft Anti-Malware. You can use this anti-malware program for free during its 6-day trial period. In that term, all functions are available, and it takes no payments to remove malware from your system.

    GridinSoft Anti-Malware free trial

    After activating your free trial, start Full scan. It may last up to 10 minutes. You may use the PC as usual.

    Scanning in GridinSoft Anti-Malware

    When the scan is finished, press the Clean Now button to remove all detected elements from your system. This procedure takes less than a minute.

    GridinSoft Anti-Malware after the scan process

    Now, you are good to go. Reboot your PC into a normal Windows mode and use just as there was nothing malicious.

    Remove Cmd.exe Virus ⛏️ Trojan Coin Miner

    Name: Cmd.exe

    Description: The Cmd.exe is a Trojan Coin Miner that uses the infected computer’s sources to mine electronic money without your authorization. This Cmd.exe will create your CPU to go for very warm temperatures for prolonged periods of time, which could reduce the life of the CPU.

    Operating System: Windows

    Application Category: Trojan

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    References

    1. Read about why Monero and DarkCoin are so popular amongst cybercriminals.
    2. Detailed explanation of how does cryptomining work.
    3. About unwanted effects for GPUs in the process of cryptomining.
    4. Our review on GridinSoft Anti-Malware.

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    About the author

    Robert Bailey

    I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

    As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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