Rjnhlsk.exe Virus ⛏️ (Coin Miner Trojan) Removal

Written by Robert Bailey
Rjnhlsk.exe process belongs to a malicious program that can correctly be identified as a coin miner trojan. That malware form uses your hardware to mine cryptocurrencies, generally – Monero or DarkCoin1. It makes your computer pretty much unfunctional as a result of high CPU usage.
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What is Rjnhlsk.exe process?

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

As I have actually mentioned in the previous paragraph, Rjnhlsk.exe is a coin miner trojan virus. The names of the .exe file may be diverse, but the effects are generally the identical. Considering that coin miners focus on cryptocurrency mining, they use all possible hardware power of your PC to conduct this operation. This malware doesn’t care about the fact that you may need to use your PC for other tasks – it will continuously consume over 80% of your processor power.

Rjnhlsk.exe Windows Process

Rjnhlsk.exe – Really high CPU/GPU usage

Besides CPU consumption, some of the coin miners additionally make use of GPU power for their operations. In that situation, you will struggle even to see the mouse arrow moving – GPU is usually used on 100%. It is not as vital as CPU for system work, so Rjnhlsk.exe coin miner viruses do not waste time on trifles and utilize all of it. It sometimes 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 anything based on the blockchain technology. Since this action takes a lot of calculations, a strong PC is needed. Exactly, the graphic card is better for this task, because they have more cores available. Cryptomining farms are usually constructed of dozens of video cards to complete their task efficiently. Such systems are not usable for “normal” purposes, like gaming or browsing the Web. 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

  • 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 Rjnhlsk.exe miner?

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

    Firstly, Rjnhlsk.exe malware makes your computer overloaded. It is not able to run your applications now, because all processor power is consumed by a malware. That malware does not care for your wants, all it focuses on is generating profits on you. Even if you are patient, and you waited until web 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 horror story for a person who does a job online.

    Rjnhlsk.exe Technical Summary.

    File NameRjnhlsk.exe
    TypeTrojan Coin Miner
    Detection NameTrojan:Win32/CoinMiner
    Distribution MethodSoftware bundling, Intrusive advertisement, redirects to shady sites etc.
    Similar behaviorWindows.exe, Astrill.exe, Asovpnsvc.exe
    RemovalDownload and install GridinSoft Anti-Malware for automatic Rjnhlsk.exe removal.

    “Visible” harm is not a solitary negative activity coin miners do to your system. Rjnhlsk.exe coin miner also deals damage to your OS. To conduct all malevolent functions correctly, it ruins the protection features of your system. You will likely see your Microsoft Defender disabled – malware stops it to avoid recognition. If you check the HOSTS file, you will likely see a ton of new entries – they are added by this trojan miner to connect your computer to a malicious cryptomining network. All these adjustments shall be gone back to the initial state 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 can cause damage to your machine and increase power costs. Hardware components are created to easily deal with high load, but they can do so only when they are in a good shape.

    Small and covered processor fan is hard to crack. Meanwhile, GPUs have big and easy-to-access rotors, which can be easily broke if affected while running, for instance, by the user much before the virus injection. Malfunctioning cooling system, together with the extremely high load caused by Rjnhlsk.exe virus can easily lead to graphic card failure3. Video cards are also tend to have very fast wearing when used for cryptocurrency mining. It is likely an undesirable situation when the performance of your GPU decreases on 20-30% just after several weeks of being used in such a way.

    How did I get Rjnhlsk.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 “serious” viruses. Adware frequently serves as a carrier for Rjnhlsk.exe malware infiltration: it shows you the banners, which have a link to malware downloading. Yes, this abstract “malware” can belong to any type – yet another adware, spyware, rogue or backdoor. However, the statistics say that around 30% of all malware spread with the malicious banners are coin miners – and Rjnhlsk.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 computer is by downloading it from the suspicious web page as a part of a program. People that spread hacked versions of well-known programs (which do not need the license key) have small chances to make money. Thus, there is a huge lure to include malware to the final package of the hacked app and acquire a coin for every setup. Before criticizing these guys for hacking and malware distribution, ask yourself – is it OK to avoid purchasing the program in this manner? It is more affordable to pay $20-$30 one time than to pay a much greater sum for antivirus program as well as new parts for your desktop.

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

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

    Eliminating such a virus requires making use of special tool. Effective antivirus should have high capability at scanning and be lightweight – in order to make no problems with usage even on weak computers. Additionally, it is better to have on-run protection in your protection solution – to halt the virus even before it starts. Microsoft Defender lacks these features for various factors. That’s why I’d recommend you to use a third-party anti-malware program for that reason. GridinSoft Anti-Malware is an ideal option that fits all of the specified qualities.5

    Prior to the virus removal, it is important to boot your Windows into Safe Mode with Networking. Since Rjnhlsk.exe miner consumes a lot of processor 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 system is in Safe Mode, all third-party programs, 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 Rjnhlsk.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 Rjnhlsk.exe Virus ⛏️ Trojan Coin Miner

    Name: Rjnhlsk.exe

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