Microsoftconhost.exe Virus ⛏️ (Coin Miner Trojan) Removal

Written by Robert Bailey
Microsoftconhost.exe process is related to a malevolent application that can correctly be identified as a coin miner virus. That malware type utilizes your hardware to mine cryptocurrencies, generally – Monero or DarkCoin1. It makes your system roughly unfunctional due to high CPU use.
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What is Microsoftconhost.exe process?

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

As I have actually specified previously, Microsoftconhost.exe is a coin miner virus. The names of the .exe file can be diverse, but the effects are generally the identical. Considering that coin miners aim at cryptocurrency mining, they utilize all possible hardware power of your personal computer to conduct this process. This malware doesn’t take note of the fact that you probably want to use your machine for other tasks – it will continuously use over 80% of your processor power.

Microsoftconhost.exe Windows Process

Microsoftconhost.exe – Extremely high CPU as well as GPU usage

Besides CPU usage, some of the coin miners additionally use GPU power for their tasks. In that situation, you will likely struggle also to see the mouse cursor moving – GPU is usually utilized on 100%. It is not as important as processor for system work, so Microsoftconhost.exe coin miner viruses don’t waste time on trifles and utilize all of it. It sometimes can cause sad results.

Shortly about cryptocurrency mining

Crypto mining term means the operation of calculating the transaction block hash. That is a basic element of anything based on the blockchain technology. Since this action takes a lot of calculations, a strong computer is required. Exactly, the GPU is better for this task, because they have more cores available. Cryptomining farms are usually constructed of tens and hundreds of graphic cards to complete their task efficiently. Such computer systems are not usable for “normal” purposes, like gaming or web browsing. Fraudsters who gain money via this coin miner use someones’ hardware 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 Microsoftconhost.exe miner?

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

    First of all, Microsoftconhost.exe virus makes your computer overloaded. It is unable to run your applications anymore, because all CPU power is consumed by a malware. That malware does not care for your necessities, all it focuses on is making money on you. Even if you are patient, and you waited until web browser is open, you will likely experience extremely sluggish efficiency. Pages can open up for years, any sort of logins will take about a minute – just a nightmare for a person who does a job online.

    Microsoftconhost.exe Technical Summary.

    File NameMicrosoftconhost.exe
    TypeTrojan Coin Miner
    Detection NameTrojan:Win32/CoinMiner
    Distribution MethodSoftware bundling, Intrusive advertisement, redirects to shady sites etc.
    Similar behaviorLklklk.exe, Cheat.exe, Remove.siww1049
    RemovalDownload and install GridinSoft Anti-Malware for automatic Microsoftconhost.exe removal.

    “Visible” damage is not a single bad activity coin miners do to your PC. Microsoftconhost.exe coin miner likewise deals damage to your OS. To conduct all malevolent functions successfully, it wrecks the protection components of your system. You will likely see your Microsoft Defender disabled – malware stops it to avoid recognition. If you open the HOSTS file, you will likely see a number of new entries – they are brought in by this trojan miner to connect your PC to a malicious mining network. All these adjustments shall be thrown back to the initial state in the process of system recovery.

    Hardware effects of coin miner activity

    Besides making your PC slow, performing at peak power for long times can cause damage to your device and raise power costs. Hardware elements are created to easily get along with high load, but they are good with it only when they are in a good shape.

    Little and covered processor fan is hard to crack. Meanwhile, GPUs have big and easy-to-access rotors, which can be easily cracked if affected while running, for example, by the user much earlier before the coin-miner injection. Malfunctioning cooling system, together with the extremely high load caused by Microsoftconhost.exe malware can easily lead to GPU failure3. GPUs are also tend to have very fast wearing when utilized for crypto mining. It is surely a bad case when your GPU’s performance decreases on 20-30% only after 1-2 weeks of being exploited in such a way.

    How did I get Microsoftconhost.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 one of the most prevalent malicious programs among “major” viruses. Adware often acts as a carrier for Microsoftconhost.exe malware injection: it demonstrates you the banners, which have a link to malware downloading. Sure, this abstract “malware” can belong to any kind – yet another adware, spyware, rogue or backdoor. However, the statistics say that approximately 30% of all viruses spread with the malevolent banners are coin miners – and Microsoftconhost.exe is just one of them.4

    Unwanted banners adware

    The example of malicious banners you can see in the Internet

    Another way you could get this item on your computer is by downloading it from the dubious website as a part of a program. Users who spread hacked variants of well-known programs (which do not require the license key) have small chances to get paid. Thus, there is a very big temptation to add malware to the final package of the hacked app and get a coin for each installation. Prior to criticizing these individuals for hacking and also malware distribution, ask yourself – is it okay to avoid purchasing the program in such a way? It is more affordable to pay $20-$30 at once than to pay a much bigger sum for antivirus software and new parts for your PC.

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

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

    Removing such a virus needs the use of specific program. Effective security tool must have high capability at scanning and be lightweight – in order to create no problems with usage also on weak computers. Furthermore, it is better to have proactive protection in your security tool – to stop the virus even before it launches. Microsoft Defender does not have these features for various reasons. That’s why I’d suggest you to use a third-party anti-malware program for that reason. GridinSoft Anti-Malware is a superb option that fits all of the discussed characteristics.5

    Prior to the malware removal, it is important to boot your operating system into Safe Mode with Networking. Since Microsoftconhost.exe miner takes a lot of CPU power, it is needed to stop 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 software, along with the majority of non-crucial operating system components, are not started with the system start. That allows you to clean the system without dealing with high processor usage of the coin miner.

    Remove Microsoftconhost.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 Microsoftconhost.exe Virus ⛏️ Trojan Coin Miner

    Name: Microsoftconhost.exe

    Description: The Microsoftconhost.exe is a Trojan Coin Miner that uses the infected computer’s sources to mine electronic money without your authorization. This Microsoftconhost.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. Read more about various malware type on Cybersecurity Glossary.
    5. 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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