Casserver.exe Virus ⛏️ (Coin Miner Trojan) Removal

Written by Robert Bailey
Casserver.exe executable file comes from a malevolent program that can correctly be defined as a coin miner trojan. That malware type utilizes your hardware to mine cryptocurrencies, generally – Monero or DarkCoin1. It makes your personal computer almost unusable because of high CPU usage.
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What is Casserver.exe process?

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

As I have actually specified previously, Casserver.exe is a coin miner trojan. The names of the .exe file may be diverse, however, the consequences are almost always the same. Because coin miners focus on cryptocurrency mining, they use all available hardware capacity of your PC to run this process. This virus does not take note of the fact that you may need to make use of your desktop for other activities – it will constantly take over 80% of your CPU power.

Casserver.exe Windows Process

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

Besides CPU usage, some of the coin miners also use GPU power for their tasks. In that case, you will likely struggle even to see the mouse cursor moving – GPU is often used on 100%. It is not as crucial as processor for system work, so Casserver.exe coin miner viruses do not waste time on trifles and use it all. It often can cause bad results.

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 anything based on the blockchain technology. Since this operation takes a lot of calculations, a high-end PC is required. Exactly, the GPU is better for this task, because they have more cores available. Cryptomining farms are usually constructed of dozens of GPUs to conduct their activity effectively. Such computer systems are not usable for “general” purposes, like gaming or browsing the Web. Fraudsters who gain money via this coin miner use someones’ computers 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 Casserver.exe miner?

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

    First off, Casserver.exe virus makes your PC overloaded. It is unable to run your applications anymore, as all CPU power is consumed by a virus. That malware does not care for your needs, all it focuses on is generating income on you. Even if you are patient, and you waited until web browser is open, you will likely struggle with incredibly sluggish performance. Pages can open for years, any type of logins will likely take about a minute – just a nightmare for a person who does a job online.

    Casserver.exe Technical Summary.

    File Name Casserver.exe
    Type Trojan Coin Miner
    Detection Name Trojan:Win32/CoinMiner
    Distribution Method Software bundling, Intrusive advertisement, redirects to shady sites etc.
    Similar behavior Wrap.exe, Vncutil.exe, Comsore3.exe
    Removal Download and install GridinSoft Anti-Malware for automatic Casserver.exe removal.

    “Visible” harm is not a solitary unpleasant thing coin miners do to your system. Casserver.exe coin miner additionally deals damage to your operating system. To carry out all malicious functions effectively, it ruins the protection mechanisms of your system. You will likely see your Microsoft Defender disabled – malware stops it to avoid detection. If you check the HOSTS file, you will likely see a ton of new entries – they are added by this coin miner to connect your PC to a malicious cryptomining network. All these adjustments shall be reverted to the original in the process of computer recovery.

    Hardware effects of coin miner activity

    Besides slowing down your computer, running at peak level for a long period of time may cause damage to your device and increase electricity expenses. PC elements are designed to easily deal with high load, but they can do so only when they are in a good shape.

    Little and covered CPU cooling system is hard to crack. Meanwhile, graphic cards have big and easy-to-access rotors, which can be easily cracked if touched while running, for example, by the user much before the coin-miner injection. Malfunctioning cooling system, together with the really high load caused by Casserver.exe can easily lead to graphic processing unit failure3. Graphic cards are also prone to have increased wearing when utilized for crypto mining. It is surely an unwanted situation when your GPU’s performance plunges 20-30% just after 1-2 weeks of being exploited in such a way.

    How did I get Casserver.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 “severe” viruses. Adware sometimes serves as a carrier for Casserver.exe malware injection: it demonstrates you the banners, which include a link to malware downloading. Sure, this abstract “malware” may belong to any type – an additional adware, spyware, rogue or backdoor. However, the statistics say that about 30% of all malware spread with the malicious banners are coin miners – and Casserver.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 item on your PC is by downloading it from the dubious web page as a part of a program. People who spread hacked variants of popular programs (which do not need the license key) have small chances to make money. For this reason, there is a very big temptation to add malware to the final package of the hacked application and acquire a coin for every installation. Before criticizing these individuals for hacking and also malware spreading, ask yourself – is it alright to avoid buying the program in this manner? It is much cheaper to pay $20-$30 at once than to pay a much greater figure for antivirus program as well as new parts for your computer.

    How to remove the Casserver.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 demands making use of special program. Appropriate security tool must have high capability at scanning and be lightweight – in order to make no problems with utilization also on weak computers. On top of that, it is recommended to have on-run security in your protection tool – to prevent the virus even before it launches. Microsoft Defender lacks these features for various reasons. That’s why I’d recommend you to use a third-party anti-malware program for that objective. GridinSoft Anti-Malware is a perfect option that fits each of the specified qualities.5

    Before the malware removal, it is important to boot your operating system into Safe Mode with Networking. Since Casserver.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 programs, along with the majority of non-crucial system components, are not started with the system start. That allows you to clean the system without dealing with high CPU usage of the coin miner.

    Remove Casserver.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 Casserver.exe Virus ⛏️ Trojan Coin Miner

    Name: Casserver.exe

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