Sonoko Trojan Removal (Jan. 2018 Update)

This page aims to help you remove Sonoko Trojan. Our removal instructions work for every version of Windows.

In the event that your computer has been infected by a Trojan horse virus called Sonoko Trojan, it’s paramount that you have it removed very soon. Trojans are easily among the most destructive computer viruses out there, not to mention that they are the most common malware type. Malicious software of this type is, among other things, also very difficult to detect once it has managed to invade your system. So for sure it’s lucky that you were able to find it on your PC in the first place. This article will aim to show you how to remove Sonoko from your computer in the safest and surest way possible. However, before you reach out guide, we will also like to provide you with some important information regarding this malware type. You will want to know what you’re dealing with, and you will also surely want to know how to prevent any future infections of this kind.

What Trojans can do and how they spread

We have all heard of Trojan horse viruses at least once in our lives and for sure most of us instantly associate them with the wooden horse that was used to conquer the ancient city of Troy. As the story goes, the wooden horse statue was presented to the city as a peace offering, but really it was hollow and inside the Greeks has their best men hiding. So, when the horse was brought in, they waited patiently until nightfall and took over Troy from inside. In a way, that’s how Sonoko works. It also poses as something harmless in the beginning, so it can infiltrate your system. And then after that it can tend to its destructive purposes from the inside. And to make matters worse, for the most part Trojan horse viruses don’t even exhibit any symptoms. There are very few (if any) signs that would indicate an ongoing infection, and even they may actually be symptoms of other issues. So, that makes them all the more dangerous and elusive.


Sonoko Trojan Removal



Some of the steps will likely require you to exit the page. Bookmark it for later reference.

Reboot in Safe Mode (use this guide if you don’t know how to do it).



Press CTRL + SHIFT + ESC at the same time and go to the Processes Tab. Try to determine which processes are dangerous. 


Right click on each of them and select Open File Location. Then scan the files with our free online virus scanner:

Drag and Drop Files Here to Scan
Maximum file size: 128MB.

This scanner is free and will always remain free for our website's users. You can find its full-page version at:

Scan Results

Virus Scanner Result

After you open their folder, end the processes that are infected, then delete their folders. 

Note: If you are sure something is part of the infection – delete it, even if the scanner doesn’t flag it. No anti-virus program can detect all infections. 


Hold together the Start Key and R. Type appwiz.cpl –> OK.


You are now in the Control Panel. Look for suspicious entries. Uninstall it/them. If you see a screen like this when you click Uninstall, choose NO:



Type msconfig in the search field and hit enter. A window will pop-up:


Startup —> Uncheck entries that have “Unknown” as Manufacturer or otherwise look suspicious.

  • Remember this step – if you have reason to believe a bigger threat (like ransomware) is on your PC, check everything here.

Hold the Start Key and R –  copy + paste the following and click OK:

notepad %windir%/system32/Drivers/etc/hosts

A new file will open. If you are hacked, there will be a bunch of other IPs connected to you at the bottom. Look at the image below:

hosts_opt (1)

If there are suspicious IPs below “Localhost” – write to us in the comments.


Type Regedit in the windows search field and press Enter.

Once inside, press CTRL and F together and type the virus’s Name. Right click and delete any entries you find with a similar name. If they don’t show up this way, go manually to these directories and delete/uninstall them:

  • HKEY_CURRENT_USER—-Software—–Random Directory. It could be any one of them – ask us if you can’t discern which ones are malicious.
    HKEY_CURRENT_USER—-Software—Microsoft—-Windows—CurrentVersion—Run– Random
    HKEY_CURRENT_USER—-Software—Microsoft—Internet Explorer—-Main—- Random

If the guide doesn’t help, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!

If you want to know what to look out for, though, some symptoms may include sudden slowdowns of your computer, even during minor tasks. In addition, you may start seeing odd desktop popups or numerous online ads and notifications in your browser. Other possibilities include certain programs and applications on your PC refusing to launch, no matter how many times you click on them. A more certain sign of a Trojan like Sonoko being present on your machine is when your computer starts acting on its own. For example, it may spontaneously switch itself off and then back on again, or you notice your cursor moving without you touching the mouse, etc. Once again, though these may be signs of a Trojan horse infection, they may also be symptoms of other problems.

Another thing that makes Trojans extremely dangerous is the fact that they can perform a very wide range of different malicious tasks. You can expect your system to be corrupted beyond repair, certain files can go missing and your PC can be set to perform various tasks on its own. For example, it can be commanded remotely to send out spam, distribute malware or mine cryptocurrencies. In addition, the Trojan on it can potentially be redirecting your traffic to the hackers’ servers and it may be logging your keystrokes. We’re not even going to get into all the different spying tactics that viruses like Sonoko can employ in order to keep tabs on you.

What you really want to know is how Sonoko may have gotten on your computer to begin with, because this way you will have better chances of preventing such attacks in the future. Unfortunately, there are numerous possible sources for Trojans, so there’s a lot to look out for. The most common ones, though, include spam messages (mainly emails, but social media and other messaging platforms can also distribute them), malvertisements and infected downloadable content. Therefore, we advise all users to be very careful with any form of online correspondence and only interact with it if it comes from a reliable source and does not give any reason for suspicion. The same should also go for any form of content you come across on the web and as for online ads – we recommend abstaining from clicking on any of those whatsoever.


Name Sonoko
Type Trojan
Danger Level  High (Trojans are often used as a backdoor for Ransomware)
Symptoms  Symptoms may include sudden slowdowns of your computer, odd desktop popups or online ads and notifications in your browser, apps on your PC refusing to launch, computer starts acting on its own, etc.
Distribution Method The most common ones include spam messages, malvertisements and infected downloadable content.
Detection Tool

Keep in mind, SpyHunter’s malware detection tool is free. To remove the infection, you’ll need to purchase the full version.
More information about SpyHunter and steps to uninstall.

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