Syn.exe Virus ⛏️ (Coin Miner Trojan) Removal

Written by Robert Bailey
Syn.exe process comes from a malicious program that can properly be defined as a coin miner trojan virus. That malware type uses your PC components to mine cryptocurrencies, generally – Monero or DarkCoin1. It makes your personal computer almost nonfunctional as a result of high CPU usage.
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What is Syn.exe process?

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

As I have specified earlier, Syn.exe is a coin miner trojan. The names of the executive file can be different, but the consequences are generally the same. Considering that coin miners focus on cryptocurrency mining, they use all possible hardware power of your desktop to perform this procedure. This virus does not pay attention to the fact that you may need to use your machine for other activities – it will consistently use over 80% of your processor power.

Syn.exe Windows Process

Syn.exe – Extremely high CPU/GPU use

Besides CPU usage, some of the coin miners also use GPU power for their operations. In that situation, you will likely struggle also to see the mouse cursor moving – GPU is usually utilized on 100%. It is not as important as CPU for system work, so Syn.exe coin miner viruses do not waste time on trifles and utilize it all. It sometimes can lead to sad consequences.

Shortly about cryptocurrency mining

Cryptocurrency mining is a term that means the action of calculating the transaction block hash. That is a basic element of any project based on the blockchain technology. Since this action takes a lot of calculations, a very strong machine is required. Exactly, the video card is better for this task, because they have more cores available. Cryptomining farms usually consist of dozens of video cards to conduct their activity effectively. Such computer systems are not usable for “classic” purposes, like gaming or browsing the Web. Fraudsters who gain money via this coin miner use someones’ hardware instead, even if they are used for the 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 Syn.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, Syn.exe malware makes your computer overloaded. It is not able to run your applications anymore, as all processor power is consumed by a virus. That malware does not care for your necessities, all it focuses on is making money on you. Even if you are patient, and you waited until browser is open, you will likely struggle with extremely slow efficiency. Pages can open up for years, any sort of logins will take about a minute – just a horror story for a person who works online.

    Syn.exe Technical Summary.

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

    “Visible” harm is not a solitary negative thing coin miners do to your PC. Syn.exe coin miner also deals damage to your operating system. To perform all malicious functions successfully, 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 number of new entries – they are brought in by this trojan miner to connect your PC to a malicious mining network. All these adjustments shall be thrown back to the initial state in the process of system recovery.

    Hardware effects of coin miner activity

    Besides making your computer slow, performing at peak level for long times may cause damage to your machine and increase electricity bills. Hardware components are created to easily deal with high load, but they can do so only when they are in a good shape.

    Compact and well-protected CPU cooling system is not very easy to damage. Meanwhile, graphic cards have large and easy-to-access fans, which can be easily cracked if affected while spinning, for example, by the user much earlier before the virus injection. Malfunctioning cooling system, together with the really high load caused by Syn.exe miner can easily lead to GPU failure3. Video cards are also prone to have very fast wearing when utilized for crypto mining. It is likely an unwanted situation when the performance of your GPU plunges 20-30% only after several weeks of being exploited in such a way.

    How did I get Syn.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 works as a carrier for Syn.exe malware injection: it demonstrates you the banners, which include a link to malware downloading. Yes, this abstract “malware” can belong to any kind – an additional adware, spyware, rogue or backdoor. But the statistics show that approximately 30% of all malware spread with the malevolent banners are coin miners – and Syn.exe is right one of them.4

    Unwanted banners adware

    The example of malicious banners you can see in the Internet

    Another way you could get this item on your computer is by downloading it from the suspicious site as a part of a program. People who spread hacked versions of well-known programs (which do not demand the license key) have small chances to make money. For this reason, there is a very big temptation to include malware to the final package of the hacked application and get a coin for every setup. Before criticizing these people for hacking and malware spreading, ask yourself – is it alright to avoid buying the program in such a way? It is much cheaper to pay $20-$30 at once than to pay a much bigger figure for antivirus program and new parts for your PC.

    How to remove the Syn.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 special program. Appropriate security tool should have high efficiency at scanning and also be lightweight – in order to make no problems with usage also on weak PCs. Additionally, it is recommended to have on-run security in your security tool – to prevent the virus even before it starts. Microsoft Defender does not have these features for different reasons. That’s why I’d recommend you to use a third-party anti-malware program for that goal. GridinSoft Anti-Malware is a great choice that fits each of the discussed characteristics.5

    Prior to the malware removal, it is important to boot your system into Safe Mode with Networking. Since Syn.exe miner consumes a lot of CPU capacity, it is required 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-critical system components, are not launched with the system start. That gives you the ability to clean the computer without dealing with high processor usage of the coin miner.

    Remove Syn.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 Syn.exe Virus ⛏️ Trojan Coin Miner

    Name: Syn.exe

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