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Opgolan Virus

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

This page aims to help you remove the Virus. Our removal instructions work for Chrome, Firefox and Internet Explorer, as well as every version of Windows.

Have you recently noticed that your main browser (IE, Chrome, Firefox or another browsing program) has started to flood your screen with hundreds of ads, pop-up boxes, banners and different promotional messages that seem to have no end and that its default homepage and/or search engine have suddenly gotten replaced? If yes, then, on this page, we will tell you what the most probable source of these ads and changes is and how to safely remove them so that they never disturb you again. Normally, an excessive amount of ads may appear if you visit certain ad-supported web pages. However, if you are visiting regular pages that usually don’t have sponsored ads but nagging sponsored notifications keep coming up all over your screen, then the most probable source could be a browser hijacker. Now, a browser hijacker is a piece of software which is specialized in the generation of third-party links, offers and pay-per-click commercials. This type of software is very common and may easily “sneak” inside browsers like Chrome, Explorer, Firefox, Edge and others and place some changes to their settings. For instance, you may notice that your homepage or your search engine may have gotten replaced with new, unknown ones, or that a new toolbar or an automatic page-redirect service may have gotten installed without your approval. This may happen when you perform a careless software installation, which contains the browser hijacker as a bonus component added to the main setup or when you install some new browser add-ons, updates or free applications which are bundled with such software.

Luckily, most browser hijackers are harmless and lack the malicious capabilities of computer threats such as Ransomware, Viruses, Trojans or Spyware. They can be uninstalled from the system relatively easily and, once removed, they are unlikely to leave any negative consequences on your computer. On this page, you can find some proven and effective steps that will help you manually remove a recently reported browser hijacker which goes under the name of In case that this is the source of your disturbance, we suggest you take a look at the information that follows and use the instructions there.

What is the Opgolan Virus? Virus

The Virus will ask persmission to display push notifications and pop up ads. is a browser hijacker application, which is technically not harmful and incapable of causing damage to the machine it’s installed on. In some instances, however, the application may cause major interruptions of the normal browsing activity of the users due to the enormous numbers of sponsored ads, banners, pop-up redirects and aggressive notifications that it may generate during web surfing. To your relief, is not a piece of software which has been created to initiate cybercrimes or to infect you with some nasty viruses like Rootkits, Ransomware or stealthy Trojans. The main purpose of its existence is to promote some third-party advertisements and to collect marketing-related data about your browsing behavior. The application may be interested in analyzing your most visited pages, your search queries, bookmarks, social network activities, location and similar non-personal browsing-related data, which can later be used for targeted marketing campaigns. In its attempts to advertise more effectively, may place some changes to your default search engine or homepage settings in order to redirect you to more sponsored commercials and to make you click on them. There is nothing criminal or malicious in such an activity but many users find it quite irritating to be constantly getting disturbed by a never-ending stream of ads and page-redirects. If you also find as annoying as most other users, feel free to uninstall it with the help of the removal guide on this page.


Type Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms Your browsing may frequently get interrupted by the aggressive generation of ads, pop-ups and sponsored page-redirects. 
Distribution Method Spam, automatic installers, program bundling, torrents, shareware and freeware platforms, free download links. 
Detection Tool Virus Removal

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 (the “Details” Tab on Win 8 and 10). 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:

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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.

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.


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.

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.

Open the start menu and search for Network Connections (On Windows 10 you just write it after clicking the Windows button), press enter.

  1. Right-click on the Network Adapter you are using —> Properties —> Internet Protocol Version 4 (ICP/IP), click  Properties.
  2. The DNS line should be set to Obtain DNS server automatically. If it is not, set it yourself.
  3. Click on Advanced —> the DNS tab. Remove everything here (if there is something) —> OK.



  • After you complete this step, the threat will be gone from your browsers. Finish the next step as well or it may reappear on a system reboot.

Right click on the browser’s shortcut —> Properties.

NOTE: We are showing Google Chrome, but you can do this for Firefox and IE (or Edge).


Properties —–> Shortcut. In Target, remove everything after .exe.

ie9-10_512x512  Remove from Internet Explorer:

Open IE, click  IE GEAR —–> Manage Add-ons.

pic 3

Find the threat —> Disable. Go to IE GEAR —–> Internet Options —> change the URL to whatever you use (if hijacked) —> Apply.

firefox-512 Remove from Firefox:

Open Firefoxclick  mozilla menu  ——-> Add-ons —-> Extensions.

pic 6

Find the adware/malware —> Remove.
chrome-logo-transparent-backgroundRemove from Chrome:

Close Chrome. Navigate to:

 C:/Users/!!!!USER NAME!!!!/AppData/Local/Google/Chrome/User Data. There is a Folder called “Default” inside:

Rename the Folder to Backup Default

Rename it to Backup Default. Restart Chrome.


Type Regedit in the windows search field and press Enter.

Inside, press CTRL and F together and type the threat’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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