If you have recently detected a virus called ww31.exe in your machine, then you may be in some serious trouble. ww31.exe is a representative of the largest malware family, comprising approximately 60 percent of all online computer viruses, namely, the Trojan Horses.


The ww31.exe virus

These viruses use stealth, and different disguise tactics to infiltrate the victim’s machine, and to complete their criminal agendas. We have created the following article in order to help our readers locate, and remove ww31.exe quickly and effectively before it can reveal its full malicious potential.

Why are Trojans so popular?

The Trojan Horse infections are well known for their stealth and the wide range of malicious activities they can perform. These threats have become the most widespread type of malware on the Internet thanks to their incredible arsenal of harmful capabilities. While we cannot identify the exact purpose of an infections such as ww31.exe or Wup.exe on your machine, we will describe the main uses of Trojans in general in order to give you a broader perspective of what you are dealing with.

  • A Trojan like ww31.exe may have targeted your computer to remove information from it. This is achieved most commonly by formatting your system’s drives, wiping them clean of the information stored on them. If this has not already happened, however, you have a great opportunity to remove the infection before it has completed its agenda.
  • For many Trojans, a more likely use might be to steal information from you. This may be work-related data, particularly if your computer is connected to a corporate network. For example, the Trojan may be inserted in the system to extract sensitive information that might be used to harm the company. If you are targeted as a private individual, the same virus could be exploited to steal personal information, to hijack your identity, to gain access to your login credentials, passwords, and online bank accounts, etc. Obviously, any of the above may have very bad consequences for you, which makes it crucial to remove ww31.exe right away.
  • Trojans are well-known for their abilities to spy on their victims. They can be used to hack into your webcam and/or mic, and provide the hackers with details about your daily activities, your home, and your conversations. This, in turn, can open up opportunities for actual physical crimes, as the information gained through such activity could be used to burgle your house, stalk you, blackmail you, etc.
  • Distribution of other viruses. Trojans are also often used to assist in infecting computers with threats such as Ransomware. Once the Trojan is activated by the unsuspecting user, the Ransomware is automatically downloaded to that machine, and the latter starts placing powerful encryption on the files stored there. As a result, the victim is denied access to their own data, and is blackmailed by the cyber criminals behind the infection to pay a ransom.

Now, our removal guide will help you manually remove ww31.exe from your machine, but If you are unsure about your computing skills, and would prefer to trust a reliable security program to handle this task for you, our professional removal tool will do the job in just a few clicks.


Name ww31.exe
Type Trojan
Detection Tool

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Remove ww31.exe Virus

Some users may be able to remove ww31.exe with the help of the quick steps below, that’s why we suggest that you also give them a try:

  1. Click the Start menu button of your Windows and go to Control Panel >>> Programs and Features >>> Uninstall a Program.
  2. Once you navigate to the above-described location, search for ww31.exe in the list of programs.
  3. If you find it, highlight it and click the Uninstall button at the top.
  4. In case you find other suspicious programs in the list, research them online and uninstall them in case they turn out to be malicious or potentially unwanted.

If you have a reason to believe that ww31.exe has added malicious entries in other locations of your system, the detailed steps in the removal guide below will help you to find those entries and remove the trojan completely.


First, it is highly recommended that before you start the removal process of ww31.exe you reboot the infected computer in Safe Mode. If you don’t know how to do that, please follow the instructions in this link. 

Also, we highly recommend that you bookmark this removal guide so you can get back to its instructions after the system reboots in Safe Mode. 



The Windows Task Manager is the place where most system processes are visible and could be managed. This is where you need to head first if you want to stop the processes that ww31.exe is running on your computer. For that, press CTRL, SHIFT and ESC keyboard keys together and go to the Processes Tab. Try to search the list for dangerous processes or those that are behaving oddly. 


As soon as you find a suspicious process, right-click on it and select Open File Location. Once you get there, you should see all the files related to the right-clicked process. It might be difficult to decide if these files are malicious or not just by looking at them that’s why what we suggest you do is to drag and drop them in the free online virus scanner below and run a file check:

Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
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This file is not matched with any known malware in the database. You can either do a full real-time scan of the file or skip it to upload a new file. Doing a full scan with 64 antivirus programs can take up to 3-4 minutes per file.
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Drag and Drop File Here To Scan
Analyzing 0 s
Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
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    Once the check completes and you see the results you will know if they are safe or not. In case the scanned files are recognized by the scanner as dangerous, end their processes and delete their folders. 


    The next system location where you need to search for ww31.exe-related entries is the Control Panel. 

    Type appwiz.cpl in the windows search field and press Enter. You should be able to Uninstall or Change a program by selecting it from the list. Try to find ww31.exe and uninstall it.

    If a warning screen with the following message appears when you click Uninstall, choose NO and continue with the uninstallation process:



    ww31.exe may have added some entries in the Startup tab of your System Configuration app. For that, type msconfig in the windows search field and hit enter to open the app and then immediately tap on Startup: 


    If you see anything unusual in the list of Startup Items, Uncheck its checkmark from the related box. Pay attention to entries with “Unknown” Manufacturer and research them online as they may be part of the threat.

    Next, press the Windows Key and R from the keyboard and  copy the line below in the Run window that will show up on your screen:

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

    Press Enter and scroll down the Hosts file that opens until you find LocalHost. Check for strange IPs below LocalHost as Trojans like ww31.exe may add some malicious IPs in the Hosts file in order to hack your computer. If you detect anything unusual or suspicious, drop us a comment below this post with a copy of the IP addresses that you have found.

    hosts_opt (1)


    Finally, check your Registry for changes caused by ww31.exe, as this Trojan may add malicious directories of its own or modify the directories of system applications. For that, launch the Registry Editor by typing  Regedit in the windows search field and pressing Enter.

    Next, search for the Trojan by typing its name in a Find dialog box (CTRL and F together).

    Delete any results by right-clicking on them. Repeat the search as many times as needed and if no more results show up with the Find function, go manually to the directories listed below and delete/uninstall them:

    • HKEY_CURRENT_USER—-Software—–Random Directory. 
    • HKEY_CURRENT_USER—-Software—Microsoft—-Windows—CurrentVersion—Run– Random
    • HKEY_CURRENT_USER—-Software—Microsoft—Internet Explorer—-Main—- Random

    It could be difficult to discern which directories are malicious. That’s why it is best to take your time and research online or ask us for help in the comments below before you delete anything from the Registry. If after you complete all the instructions ww31.exe still doesn’t want to get removed, the best way to deal with it is to scan the computer with a professional removal tool like the one recommended on this page.

    About the author

    Lidia Howler

    Lidia is a web content creator with years of experience in the cyber-security sector. She helps readers with articles on malware removal and online security. Her strive for simplicity and well-researched information provides users with easy-to-follow It-related tips and step-by-step tutorials.

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