Parasite may reinstall itself multiple times if you don't delete its core files. We recommend downloading SpyHunter to scan for malicious programs installed with it. This may save you hours and cut down your time to about 15 minutes. 

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Randex is a stealthy Trojan that can infect computers without any symptoms and can start malicious processes in their background. Hackers can use Randex to gain unauthorized access to the system, spy on their victims, steal sensitive information and more.


Multiple VirusTotal antivirus scanner pick up Randex.

The members of the Trojan horse category of malware are commonly known to be very versatile and to be extremely difficult to detect and remove. This applies even more so to Randex, which is a new threat that infects computers without any visible symptoms and launches different malicious processes in them. What makes it especially difficult to identify and intercept such Trojan horse viruses in time has to do with the inability of most antivirus programs to correctly detect the latest Trojan-based infections and to warn users about them. This is because, in order to recognize a certain program as malicious, most antivirus programs rely on their database. The problem is if a given new threat, such as Randex for example, has not been added to the database or the user has not updated the virus definitions of their security software in some time, even if the infection is present on the computer, the antivirus program will probably not classify it as unsafe and will not take actions against it. In this case, the Trojan is practically invisible to the security software unless it is added to the database and is able to attack the machine without being disturbed. Of course, the more sophisticated the security program is and the more frequently users update it, the greater its ability to protect the computer against the latest online threats.

Sadly, detecting a Trojan without the help of reliable antimalware software is oftentimes not even possible because this malware usually does not cause red flags that would give it away. Nevertheless, there are certain things that you should look for, as they could actually indicate that a threat such as Randex has compromised your computer. The infamous Blue Screen of Death crash is one of these potential symptoms. It is a device crash error screen triggered by a serious computer problem. While Blue Screen crashes may have several triggers, a Trojan horse infection can definitely be one, particularly if this symptom is coupled with general computer instability, freezing of the screen or device or browser settings changes you haven’t authorized or approved. In general, any sort of device disruption may be a sign of a Trojan horse virus, so make sure you always check anything that seem wrong with your computer.

Due to their versatility, Trojans such as Randex are used in a variety of criminal operations and may carry out a series of harmful acts, including collecting confidential personal and/or professional information, spying on their victims online and offline activities, introducing new threats into the attacked computer (especially ransomware, spyware and rootkits), and providing the hackers with full control over the entire OS. All of this means that a single Trojan may cause very unpredictable harm. Regardless of the end goal, the virus should be removed as soon as possible, ideally with the help of the instructions below.


Name Randex
Type Trojan
Danger Level High (Trojans are often used as a backdoor for Ransomware)
Symptoms Users may notice that their computer is sluggish, crashes often or uses a higher than normal amount of system resources.
Distribution Method Trojans spread across the web most commonly through spam messages, malicious email attachments, malvertisements and cracked software installers.
Detection Tool

Randex Virus Removal

If you are looking for a way to remove Randex you can try this:

  1. Click on the Start button in the bottom left corner of your Windows OS.
  2. Go to Control Panel -> Programs and Features -> Uninstall a Program.
  3. Search for Randex and any other unfamiliar programs.
  4. Uninstall Randex as well as other suspicious programs.

Note that this might not get rid of Randex completely. For more detailed removal instructions follow the guide below.

If you have a Windows virus, continue with the guide below.

If you have a Mac virus, please use our How to remove Ads on Mac guide.

If you have an Android virus, please use our Android Malware Removal guide.

If you have an iPhone virus, please use our iPhone Virus Removal guide


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).



We get asked this a lot, so we are putting it here: Removing parasite manually may take hours and damage your system in the process. We recommend downloading SpyHunter to see if it can detect parasite files for you.

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: https://howtoremove.guide/online-virus-scanner/

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:



To remove parasite on your own, you may have to meddle with system files and registries. If you were to do this, you need to be extremely careful, because you may damage your system.

If you want to avoid the risk, we recommend downloading SpyHunter
a professional malware removal tool.

More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.

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!

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