Chek.exe Virus ⛏️ (Coin Miner Trojan) Removal

Written by Robert Bailey
Chek.exe executable file is related to a harmful program that can correctly be defined as a coin miner trojan. That malware form uses your PC components to mine cryptocurrencies, primarily – Monero or DarkCoin1. It makes your system roughly unusable because of high CPU utilization.
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What is Chek.exe process?

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

As I have pointed out earlier, Chek.exe is a coin miner trojan. The names of the executive file may be diverse, but the effects are almost always the same. Because coin miners aim at cryptocurrency mining, they use all available hardware power of your personal computer to run this procedure. This malware doesn’t pay attention to the fact that you probably need to make use of your device for other activities – it will always take over 80% of your processor power.

Chek.exe Windows Process

Chek.exe – Very high CPU as well as GPU use

Besides CPU usage, some of the coin miners also utilize GPU power for their tasks. In that situation, you will probably struggle also to see the mouse arrow moving – GPU is often used on 100%. It is not as vital as CPU for system work, so Chek.exe coin miner viruses do not waste time on trifles and utilize all of it. It sometimes may lead to unhappy results.

Shortly about cryptocurrency mining

Crypto mining is a term that means the action of calculating the transaction block hash. That is a basic part of anything based on the blockchain technology. Since this operation takes a lot of calculations, a very strong computer is required. Exactly, the graphic card is better for this task, because they have more cores available. Cryptomining farms usually consist of dozens of graphic cards to complete their task efficiently. Such computer systems are not usable for “normal” purposes, like gaming or browsing the Web. Fraudsters who gain money 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 Chek.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, Chek.exe malware makes your computer overloaded. It is not able to run your applications anymore, because all processor power is consumed by a malware. That malware does not care for your needs, all it pays attention to is generating income on you. Even if you are patient, and you waited until browser is open, you will likely struggle with exceptionally sluggish performance. Pages will open up for years, any kind of logins will likely take about a minute – just a nightmare for a person who works online.

    Chek.exe Technical Summary.

    File NameChek.exe
    TypeTrojan Coin Miner
    Detection NameTrojan:Win32/CoinMiner
    Distribution MethodSoftware bundling, Intrusive advertisement, redirects to shady sites etc.
    Similar behaviorExlorer.exe, C.exe, Config.exe
    RemovalDownload and install GridinSoft Anti-Malware for automatic Chek.exe removal.

    “Visible” damage is not a single negative activity coin miners perform to your computer. Chek.exe coin miner also deals damage to your OS. To carry out all malevolent operations effectively, it wrecks the protection mechanisms of your system. You will likely see your Microsoft Defender disabled – malware halts it to prevent detection. If you check the HOSTS file, you will likely see a lot of new entries – they are added by this coin miner to connect your computer to a malicious cryptomining network. All these adjustments are about to be gone back to the initial state in the process of computer recovery.

    Hardware effects of coin miner activity

    Besides making your PC slow, performing at peak level for long times may cause damage to your device as well as raise electricity bills. Hardware elements are created to easily deal with high load, but they are good with it only in case when they are in a good shape.

    Little and covered CPU cooling system is quite hard to crack. Meanwhile, graphic cards have large and easy-to-access rotors, which can be easily cracked if touched while working, for instance, by the user much earlier before the virus injection. Malfunctioning cooling system, together with the extremely high load caused by Chek.exe virus can easily lead to graphic processing unit failure3. GPUs are also tend to have fast wearing when used for cryptocurrency mining. It is likely a bad situation when the performance of your GPU plunges 20-30% just after several weeks of being used in such a way.

    How did I get Chek.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 malevolent programs among “severe” malware. Adware frequently serves as a carrier for Chek.exe malware infiltration: it demonstrates you the banners, which include a link to malware downloading. Yes, this abstract “malware” may belong to any kind – another adware, spyware, rogue or backdoor. But the statistics show that approximately 30% of all viruses spread with the malicious banners are coin miners – and Chek.exe is right with them.4

    Unwanted banners adware

    The example of malicious banners you can see in the Internet

    One more way you could get this thing on your PC is by downloading it from the suspicious site as a part of a program. Users 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 add in malware to the final package of the hacked application and receive a coin for every setup. Before blaming these people for hacking and also malware distribution, ask yourself – is it okay to avoid buying the program in such a way? It is more affordable to pay $20-$30 at once than to pay a much greater figure for antivirus program and new parts for your desktop.

    How to remove the Chek.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 demands the use of specific program. Appropriate security tool should have high efficiency at scanning and be lightweight – in order to create no problems with usage even on weak computers. Additionally, it is better to have on-run protection in your security tool – to halt the virus even before it starts. Microsoft Defender lacks these features for different factors. That’s why I’d advise you to use a third-party anti-malware program for that objective. GridinSoft Anti-Malware is a superb choice that fits all of the discussed features.5

    Before the virus removal, it is important to reboot your Windows into Safe Mode with Networking. Since Chek.exe miner consumes a lot of CPU capacity, it is required 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 system is in Safe Mode, all third-party software, just like the majority of non-crucial operating system components, are not started with the system start. That allows you to clean the computer without dealing with high processor usage of the coin miner.

    Remove Chek.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 Chek.exe Virus ⛏️ Trojan Coin Miner

    Name: Chek.exe

    Description: The Chek.exe is a Trojan Coin Miner that uses the infected computer’s sources to mine electronic money without your authorization. This Chek.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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