Regsvr32.exe Virus ⛏️ (Coin Miner Trojan) Removal

Written by Robert Bailey
Regsvr32.exe is a legitimate file. This process is known as Microsoft© Register Server. It belongs to Windows OS and developed by Microsoft. It is stored in C:\Windows\System32 or SysWOW64.

The malware programmers or cybercriminals write different types of malicious programs and name it regsvr32.exe to spread virus infection. But cyber criminals write different types of malware and name it as regsvr32 to spread infection.

Regsvr32.exe executable file comes from a harmful application that can correctly be identified as a coin miner trojan virus. That malware type uses your PC components to mine cryptocurrencies, generally – Monero or DarkCoin1. It makes your computer roughly unfunctional due to high CPU usage.

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What is Regsvr32.exe process?

Regsvr32.exe is a malicious process created by coin miner virus

As I have pointed out before, Regsvr32.exe is a coin miner virus. The names of the executive file can be diverse, however, the consequences are usually the same. Because coin miners aim at cryptocurrency mining, they use all possible hardware power of your PC to run this process. This virus does not pay attention to the fact that you probably need to make use of your computer for other tasks – it will always use over 80% of your processor power.

Regsvr32.exe Windows Process

Regsvr32.exe – Extremely high CPU and GPU usage

Besides CPU consumption, some of the coin miners additionally use GPU power for their operations. In that situation, you will likely struggle even to see the mouse cursor moving – GPU is usually used on 100%. It is not as vital as CPU for system work, so Regsvr32.exe coin miner viruses don’t waste time on trifles and utilize all of it. It often can cause sad consequences.

Shortly about cryptocurrency mining

Crypto mining is a term that means the activity of calculating the transaction block hash. That is a basic part of any project based on blockchain technology. Since this action takes a lot of calculations, a very strong computer is needed. Exactly, the video card is better for this purpose, because they have more cores available. Cryptocurrency mining farms are usually constructed of tens and hundreds of video cards to complete their task efficiently. Such systems are not usable for “normal” purposes, like gaming or web browsing. Fraudsters who make a profit via this coin miner use someones’ PCs instead, even if they are used for 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 Regsvr32.exe miner?

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

    Firstly, Regsvr32.exe malware makes your system overloaded. It is unable to run your applications now, because all processor power is used by a virus. That malware does not care for your wants, 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 incredibly sluggish efficiency. Pages can open up for years, any kind of logins will take about a minute – just a headache for a person that does a job online.

    Regsvr32.exe Technical Summary.

    File NameRegsvr32.exe
    TypeTrojan Coin Miner
    Detection NameTrojan:Win32/CoinMiner
    Distribution MethodSoftware bundling, Intrusive advertisement, redirects to shady sites etc.
    Similar behaviorAutoclicker.exe, Slitherio.exe, Sbr.exe
    RemovalDownload and install GridinSoft Anti-Malware for automatic Regsvr32.exe removal.

    “Visible” harm is not a single bad thing coin miners perform to your computer. Regsvr32.exe coin miner also deals damage to your OS. To perform all malicious operations successfully, it ruins the security features 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 lot of new notes – they are added by this trojan miner to connect your system to a malicious cryptomining network. All these changes shall be reverted to the original in the process of system recovery.

    Hardware effects of coin miner activity

    Besides making your PC slow, running at peak power for long times may trigger damage to your machine as well as raise power bills. PC components are created to easily get along with high load, but they can do so only when they are in a good shape.

    Small and covered processor fan is quite hard to crack. Meanwhile, GPUs have big and easy-to-access fans, which can be easily broke if affected while working, for example, by the user much before the coin-miner injection. Malfunctioning cooling system, together with the really high load caused by Regsvr32.exe malware can easily lead to GPU failure3. Graphic cards are also prone to have very fast wearing when utilized for cryptocurrency mining. It is surely an unwanted case when the performance of your video card decreases on 20-30% only after 1-2 weeks of being used in such a way.

    How did I get Regsvr32.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 “severe” viruses. Adware sometimes works as a carrier for Regsvr32.exe malware infiltration: it demonstrates you the banners, which contain a link to malware downloading. Yes, this abstract “malware” may 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 Regsvr32.exe is right among them.4

    Unwanted banners adware

    The example of malicious banners you can see in the Internet

    Another way you could get this thing on your PC is by downloading it from the suspicious web page as a part of a program. People who spread hacked versions of popular programs (which do not require the license key) have small chances to get paid. For this reason, there is a huge temptation to add in malware to the final package of the hacked app and acquire a coin for every setup. Before blaming these individuals for hacking and malware distribution, ask yourself – is it alright to avoid paying for the program in this manner? It is more affordable to pay $20-$30 at once than to pay a much greater sum for antivirus software and new parts for your PC.

    How to remove the Regsvr32.exe miner from my PC?

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

    Getting rid of such a virus needs the use of a special program. Effective security tool must have high efficiency at scanning and also be lightweight – in order to make no problems with usage also on weak systems. On top of that, it is recommended to have proactive protection in your protection solution – to halt the virus even before it starts. Microsoft Defender does not have these functions for different reasons. That’s why I’d advise you to use a third-party anti-malware program for that reason. GridinSoft Anti-Malware is a great option that fits each of the discussed qualities.5

    Prior to the virus removal, it is important to boot your operating system into Safe Mode with Networking. Since Regsvr32.exe miner consumes a lot of processor 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 apps, just like the majority of non-critical Windows components, are not launched with the system start. That gives you the ability to clean the system without dealing with high processor usage of the coin miner.

    Remove Regsvr32.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 Regsvr32.exe Virus ⛏️ Trojan Coin Miner

    Name: Regsvr32.exe

    Description: The Regsvr32.exe is a Trojan Coin Miner that uses the infected computer’s sources to mine electronic money without your authorization. This Regsvr32.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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