Host.exe Virus ⛏️ (Coin Miner Trojan) Removal

Written by Robert Bailey
Host.exe process belongs to a malevolent program that can properly be identified as a coin miner virus. That malware form uses your PC components to mine cryptocurrencies, primarily – Monero or DarkCoin1. It makes your computer pretty much unusable because of high CPU usage.
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What is Host.exe process?

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

As I have actually specified earlier, Host.exe is a coin miner trojan. The names of the .exe file may be diverse, but the impacts are generally the identical. Because coin miners aim at cryptocurrency mining, they use all available hardware capacity of your personal computer to perform this process. This malware doesn’t care about the fact that you probably want to use your device for other activities – it will always use over 80% of your CPU power.

Host.exe Windows Process

Host.exe – Extremely high CPU and GPU usage

Besides CPU usage, some of the coin miners additionally make use of GPU power for their tasks. In that situation, you will likely struggle even to see the mouse cursor moving – GPU is often used on 100%. It is not as essential as processor for system work, so Host.exe coin miner viruses don’t waste time on trifles and utilize it all. It often may cause bad effects.

Shortly about cryptocurrency mining

Cryptocurrency mining is a term that means the operation of calculating the transaction block hash. That is a integral element of any project based on the blockchain technology. Since this operation takes a lot of calculations, a very strong machine is required. Exactly, the graphic card is better for this purpose, because they have more cores available. Cryptomining farms are usually constructed of tens and hundreds of video cards to complete their task efficiently. Such systems are not usable for “classic” purposes, like gaming or web browsing. Crooks 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

  • Your device overheats (system unit/laptop body is very hot)
  • You are not able to open your apps or they are opening for ages
  • Unknown process is running in the background and consumes your PC resources
  • Windows Defender does not respond
  • How dangerous is the Host.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, Host.exe malware makes your system overloaded. It is unable to run your applications anymore, as all processor power is consumed by a malware. That malware does not care for your needs, 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 struggle with extremely sluggish efficiency. Pages can open for years, any kind of logins will take about a minute – just a headache for a person that does a job online.

    Host.exe Technical Summary.

    File NameHost.exe
    TypeTrojan Coin Miner
    Detection NameTrojan:Win32/CoinMiner
    Distribution MethodSoftware bundling, Intrusive advertisement, redirects to shady sites etc.
    Similar behaviorFmcud.exe, Eu.exe, Service5.exe
    RemovalDownload and install GridinSoft Anti-Malware for automatic Host.exe removal.

    “Visible” harm is not a solitary negative activity coin miners perform to your personal computer. Host.exe coin miner additionally deals damage to your operating system. To carry out all malevolent functions effectively, it ruins the security features of your system. You will likely see your Microsoft Defender disabled – malware halts it to avoid detection. If you open the HOSTS file, you will likely see a ton of new entries – they are brought in by this trojan miner to connect your system to a malicious mining network. All these adjustments shall be thrown back to the original in the process of system recovery.

    Hardware effects of coin miner activity

    Besides making your computer slow, running at peak level for a long period of time may trigger damage to your device as well as raise electricity bills. 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.

    Compact and covered processor cooling system is not very easy to damage. Meanwhile, graphic cards have big and easy-to-access fans, which can be easily cracked if affected while running, for instance, by the user much earlier before the coin-miner injection. Malfunctioning cooling system, together with the extremely high load caused by Host.exe miner can easily lead to GPU failure3. GPUs are also prone to have fast wearing when utilized for cryptocurrency mining. It is surely an undesirable case when your GPU’s performance plunges 20-30% just after 1-2 weeks of being used in such a way.

    How did I get Host.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 common malevolent programs among “major” viruses. Adware frequently works as a carrier for Host.exe malware infiltration: it demonstrates you the banners, which have a link to malware downloading. Sure, this abstract “malware” may belong to any kind – yet another adware, spyware, rogue or backdoor. However, the statistics show that approximately 30% of all malware spread through the malevolent banners are coin miners – and Host.exe is just one of them.4

    Unwanted banners adware

    The example of malicious banners you can see in the Internet

    An additional way you could get this item on your computer is by downloading it from the unreliable website as a part of a program. Users that spread hacked versions of well-known programs (which do not require the license key) have small chances to get paid. Thus, there is a very big lure to include malware to the final package of the hacked application and acquire a coin for each installation. Before criticizing these individuals for hacking and also malware distribution, ask yourself – is it alright to avoid purchasing the program in this manner? It is more affordable to pay $20-$30 one time than to pay a much bigger figure for antivirus program and new parts for your computer.

    How to remove the Host.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 involves making use of specific software. Appropriate anti-malware program should have high efficiency at scanning and also be lightweight – in order to make no problems with utilization even on weak systems. On top of that, it is better to have proactive security 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 a superb option that fits all of the specified qualities.5

    Prior to the virus removal, it is important to boot your operating system into Safe Mode with Networking. Since Host.exe miner consumes a lot of CPU power, it is needed 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 apps, along with the majority of non-crucial operating system components, are not launched with the system start. That allows you to clean the computer without dealing with high processor usage of the coin miner.

    Remove Host.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 Host.exe Virus ⛏️ Trojan Coin Miner

    Name: Host.exe

    Description: The Host.exe is a Trojan Coin Miner that uses the infected computer’s sources to mine electronic money without your authorization. This Host.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 GridinSoft Threat Encyclopedia.
    5. Our review on GridinSoft Anti-Malware.

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    About the author

    Robert Bailey

    Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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