Loleth.exe Virus ⛏️ (Coin Miner Trojan) Removal

Written by Robert Bailey
Loleth.exe executable file belongs to a harmful program that can correctly be defined as a coin miner virus. That malware type utilizes your hardware to mine cryptocurrencies, generally – Monero or DarkCoin1. It makes your system pretty much nonfunctional because of high CPU use.
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What is Loleth.exe process?

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

As I have specified previously, Loleth.exe is a coin miner virus. The names of the .exe file can be different, however, the effects are almost always the same. Since coin miners focus on cryptocurrency mining, they utilize all available hardware power of your PC to run this process. This malware doesn’t pay attention to the fact that you may need to make use of your system for other tasks – it will constantly use over 80% of your processor power.

Loleth.exe Windows Process

Loleth.exe – Very high CPU as well as GPU usage

Besides CPU usage, some of the coin miners additionally use GPU power for their operations. In that case, you will likely struggle even to see the mouse cursor moving – GPU is usually utilized on 100%. It is not as essential as processor for system work, so Loleth.exe coin miner viruses do not waste time on trifles and utilize it all. It often can cause unhappy consequences.

Shortly about cryptocurrency mining

Cryptocurrency mining is a term that means the operation of calculating the transaction block hash. That is a basic element of anything based on the blockchain technology. Since this operation takes a lot of calculations, a high-end desktop is required. Exactly, the graphic 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 computer systems are not usable for “usual” purposes, like gaming or web browsing. 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 Loleth.exe miner?

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

    First, Loleth.exe virus makes your system overloaded. It is unable to run your applications anymore, because all CPU power is consumed by a malware. That malware does not care for your needs, 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 experience 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 works online.

    Loleth.exe Technical Summary.

    File Name Loleth.exe
    Type Trojan Coin Miner
    Detection Name Trojan:Win32/CoinMiner
    Distribution Method Software bundling, Intrusive advertisement, redirects to shady sites etc.
    Similar behavior E1.exe, Etc.exe, Advancedwindowsmanager.exe
    Removal Download and install GridinSoft Anti-Malware for automatic Loleth.exe removal.

    “Visible” damage is not a single unpleasant activity coin miners perform to your computer. Loleth.exe coin miner likewise deals damage to your OS. To complete all malevolent operations successfully, it wrecks the security mechanisms 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 ton of new notes – they are added by this coin miner to connect your computer to a malicious mining network. All these adjustments are about to be reverted 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 trigger damage to your device and raise electricity costs. Hardware components are designed to easily deal with high load, but they are good with it only when they are in a good shape.

    Small and well-protected CPU fan is not very easy to damage. Meanwhile, graphic cards have large and easy-to-access fans, which can be easily broke if touched while running, for instance, by the user much earlier before the virus injection. Malfunctioning cooling system, together with the very high load caused by Loleth.exe can easily lead to GPU failure3. GPUs are also prone to have very fast wearing when used for cryptocurrency mining. It is surely an unwanted situation when the performance of your video card plunges 20-30% just after 1-2 weeks of being used in such a way.

    How did I get Loleth.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 through “serious” viruses. Adware frequently acts as a carrier for Loleth.exe malware injection: it shows you the banners, which have a link to malware downloading. Sure, this abstract “malware” can belong to any kind – yet another adware, spyware, rogue or backdoor. But the statistics show that about 30% of all malware spread through the malicious banners are coin miners – and Loleth.exe is just 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 unreliable website as a part of a program. Users that spread hacked variants of favored programs (which do not need the license key) have small chances to earn money. Hence, there is a huge temptation to add malware to the final package of the hacked app and receive a coin for each installation. Prior to criticizing these people for hacking and also malware distribution, ask yourself – is it alright to avoid paying for 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 as well as new parts for your PC.

    How to remove the Loleth.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 tool. Effective security tool should have high capability at scanning and be lightweight – in order to create no problems with utilization even on weak PCs. On top of that, it is better to have proactive protection in your security tool – to halt the virus even before it launches. Microsoft Defender lacks these elements for different factors. That’s why I’d recommend you to use a third-party anti-malware program for that reason. GridinSoft Anti-Malware is a perfect choice that fits each of the specified characteristics.5

    Before the virus removal, it is important to boot your Windows into Safe Mode with Networking. Since Loleth.exe miner takes a lot of CPU 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, along with the majority of non-critical Windows components, are not launched with the system start. That gives you the ability to clean the computer without dealing with high CPU usage of the coin miner.

    Remove Loleth.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 Loleth.exe Virus ⛏️ Trojan Coin Miner

    Name: Loleth.exe

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