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Gemius virus. How to remove? (Uninstall guide)

removal by Ugnius Kiguolis - - | Type: Adware

Gemius is a harmless, but can be used for collecting your browsing-related data

Gemius ads appear as full page graphics

Gemius is NOT a virus. It is a free software which can be used to collect specific information which is additionally involved to marketing campaigns. However, the collection of this information is initiated only with users' awareness. 

Because of users' tracking, some of security software vendors have decided to include the app to adware[1] and similar categories. The most of AV engines recognize this app as Win32/Trackware or Win32/Trackware.Gemius[2] and, therefore, is often described as Gemius virus. Nevertheless, it exhibits very low danger level and can hardly cause damage to you or your PC system. 

Name Gemius
Type PUP, adware
Danger level Low
Symptoms Excessive amount of ads on web browser, questionnaires, redirects to unexpected websites
AV detection name Win32/Trackware or Win32/Trackware.Gemius

The company, responsible for the development and distribution of Gemius app, claims to help its business clients by:

providing data, solutions and recommendations in the area of online advertising campaigns' management as well as websites' monitoring and analysis as far as users' profiles are concerned.

However, if the unsuspecting user downloads their ad-supported application, web browsers like Google Chrome, Mozilla Firefox or Edge start manifesting unusual and quite annoying behavior. Mostly, users who were convinced into installing Gemius software report about the appearance of survey ads, questionnaires and commercial offers. The content behind these ads is typically monitored by the provider. 

Apart from being rather irritating, Gemius can also drop cookies on your web browser. These text files are used to collect information about users' online activities, habits, interests and similar data. The main purpose of the app is to track non-personally identifiable[3] information about its users and send it to third-parties or affiliates for further investigations.

All these details are revealed in program's privacy policy,[4] so make sure you read it carefully before installing it on the system. It claims to be collecting Search Data, such as search terms, mostly visited websites, time spent and data entered when visiting them, clicks, technical details about browser's type, language, and settings, PC's IP address, location, email address and so on. 

If you are not fond of being interrupted while browsing on the web, Gemius removal would be the right solution. The easiest way to get rid of it is to run a full system scan with Reimage or another anti-malware program. You can also uninstall the related browser extension from the system manually.

Ad-supported PUPs are mainly distributed via freeware

Sometimes people report about Gemius cookies installed on their computer behind their back. In this case, we should inform you that there are hundreds of browser add-ons and similar components which have been distributed using “bundling.”

This so-called marketing technique is totally legitimate. That's why it has become very popular while trying to spread either potentially unwanted programs or legitimate and useful add-ons. This infiltration method allows attaching adware as an optional component to other freeware, such as download managers, PDF creators, media players and so on.

Gemius PUP generates survey ads

Therefore, if you want to avoid downloading extra attachments to the system, you have to check every freeware before installing it. First of all, you should read EULA, Privacy Policy, and other accessible information that is related to your selected freeware. Besides, you should always select Advanced or Custom installation option and carefully monitor the entire installation process.

Finally, you will have to uncheck all checkboxes which claim that you agree to install “optional downloads,” such as this PUP. If you will not do that, it's very likely that you will install a whole bundle of programs instead of one.

Get rid of Gemius

Adware programs might be removed either manually or automatically. Manual Gemius removal is a little bit harder than automatic because it requires investigating computer’s system, looking for questionable entries, analyzing them and, finally, uninstalling cookies and similar components from it Besides, you may fail to detect which program was responsible for bringing problems inside your computer.

However, if this task seems complicated and you wish someone would do it for you; we have a solution as well. You can also remove Gemius with a help of security programs. All you have to do is to install the necessary software, update it and run a full system scan.

You can remove virus damage automatically with a help of one of these programs: Reimage, Malwarebytes MalwarebytesCombo Cleaner, Plumbytes Anti-MalwareMalwarebytes Malwarebytes. We recommend these applications because they detect potentially unwanted programs and viruses with all their files and registry entries that are related to them.

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What to do if failed?
If you failed to remove virus damage using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to remove virus damage. Free scanner allows you to check whether your PC is infected or not. If you need to remove malware, you have to purchase the licensed version of Reimage malware removal tool.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with Malwarebytes.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with Combo Cleaner.
Gemius virus snapshot
Gemius Privacy Policy printscreen

To remove Gemius virus, follow these steps:

WindowsMac OS XInternet ExplorerMicrosoft EdgeFirefoxGoogle ChromeSafari

Uninstall Gemius from Windows systems

Make sure you follow these instructions carefully. It's important to find and delete all related components that might be responsible for providing unwanted ads on your computer.

  1. Click Start Control Panel Programs and Features (if you are Windows XP user, click on Add/Remove Programs). Click 'Start -> Control Panel -> Programs and Features' (if you are 'Windows XP' user, click on 'Add/Remove Programs').
  2. If you are Windows 10 / Windows 8 user, then right-click in the lower left corner of the screen. Once Quick Access Menu shows up, select Control Panel and Uninstall a Program. If you are 'Windows 10 / Windows 8' user, then right-click in the lower left corner of the screen. Once 'Quick Access Menu' shows up, select 'Control Panel' and 'Uninstall a Program'.
  3. Uninstall Gemius and related programs
    Here, look for Gemius or any other recently installed suspicious programs.
  4. Uninstall them and click OK to save these changes. Right click on each of suspicious entries and select 'Uninstall'
WindowsMac OS XInternet ExplorerMicrosoft EdgeFirefoxGoogle ChromeSafari

Erase Gemius from Mac OS X system

  1. If you are using OS X, click Go button at the top left of the screen and select Applications. Cick 'Go' and select 'Applications'
  2. Wait until you see Applications folder and look for Gemius or any other suspicious programs on it. Now right click on every of such entries and select Move to Trash. Click on every malicious entry and select 'Move to Trash'
WindowsMac OS XInternet ExplorerMicrosoft EdgeFirefoxGoogle ChromeSafari

Get rid of Gemius from Internet Explorer (IE)

  1. Remove dangerous add-ons
    Open Internet Explorer, click on the Gear icon (IE menu) on the top right corner of the browser and choose Manage Add-ons. Click on menu icon and select 'Manage add-ons'
  2. You will see a Manage Add-ons window. Here, look for Gemius and other suspicious plugins. Disable these entries by clicking Disable: Right click on each of malicious entries and select 'Disable'
  3. Change your homepage if it was altered by virus:
    Click on the gear icon (menu) on the top right corner of the browser and select Internet Options. Stay in General tab.
  4. Here, remove malicious URL and enter preferable domain name. Click Apply to save changes. Delete malicious URL, enter your desired domain name and click 'Apply' to save changes
  5. Reset Internet Explorer
    Click on the gear icon (menu) again and select Internet options. Go to Advanced tab.
  6. Here, select Reset.
  7. When in the new window, check Delete personal settings and select Reset again to complete Gemius removal. Go to 'Advanced' tab and click on 'Reset' button. Now select 'Delete personal settings' and click on 'Reset' button again
WindowsMac OS XInternet ExplorerMicrosoft EdgeFirefoxGoogle ChromeSafari

Remove Gemius virus from Microsoft Edge

Reset Microsoft Edge settings (Method 1):

  1. Launch Microsoft Edge app and click More (three dots at the top right corner of the screen).
  2. Click Settings to open more options.
  3. Once Settings window shows up, click Choose what to clear button under Clear browsing data option. Go to Settings and select 'Choose what to clear'
  4. Here, select all what you want to remove and click Clear. Select 'Clear' button
  5. Now you should right-click on the Start button (Windows logo). Here, select Task Manager. Open the start menu and select 'Task Manager'
  6. When in Processes tab, search for Microsoft Edge.
  7. Right-click on it and choose Go to details option. If can’t see Go to details option, click More details and repeat previous steps. Right-click 'Microsoft Edge' and select 'Go to details' Select 'More details' if 'Go to details' option fails to show up
  8. When Details tab shows up, find every entry with Microsoft Edge name in it. Right click on each of them and select End Task to end these entries. Find Microsoft Edge entries and select 'End Task'

Resetting Microsoft Edge browser (Method 2):

If Method 1 failed to help you, you need to use an advanced Edge reset method.

  1. Note: you need to backup your data before using this method.
  2. Find this folder on your computer: C:\Users\%username%\AppData\Local\Packages\Microsoft.MicrosoftEdge_8wekyb3d8bbwe.
  3. Select every entry which is saved on it and right click with your mouse. Then Delete option. Go to Microsoft Edge folder on your computer, right-click every entry and click 'Delete'
  4. Click the Start button (Windows logo) and type in window power in Search my stuff line.
  5. Right-click the Windows PowerShell entry and choose Run as administrator. Find Windows PowerShell, right-click it and select 'Run as administrator'
  6. Once Administrator: Windows PowerShell window shows up, paste this command line after PS C:\WINDOWS\system32> and press Enter:
    Get-AppXPackage -AllUsers -Name Microsoft.MicrosoftEdge | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register $($_.InstallLocation)\AppXManifest.xml -Verbose}
    Copy and paste a required command and press 'Enter'

Once these steps are finished, Gemius should be removed from your Microsoft Edge browser.

WindowsMac OS XInternet ExplorerMicrosoft EdgeFirefoxGoogle ChromeSafari

Delete Gemius from Mozilla Firefox (FF)

Check the list of add-ons on Firefox and uninstall the ones that look suspicious.

  1. Remove dangerous extensions
    Open Mozilla Firefox, click on the menu icon (top right corner) and select Add-ons Extensions. Click on menu icon and select 'Add-ons'
  2. Here, select Gemius and other questionable plugins. Click Remove to delete these entries. Select 'Extensions' and look for malicious entries. Click 'Remove' to get rid of each of them
  3. Reset Mozilla Firefox
    Click on the Firefox menu on the top left and click on the question mark. Here, choose Troubleshooting Information. Click on menu icon and then on '?'. Select 'Troubleshooting Information'
  4. Now you will see Reset Firefox to its default state message with Reset Firefox button. Click this button for several times and complete Gemius removal. Click on 'Reset Firefox' button for a couple of times
WindowsMac OS XInternet ExplorerMicrosoft EdgeFirefoxGoogle ChromeSafari

Eliminate Gemius from Google Chrome

  1. Delete malicious plugins
    Open Google Chrome, click on the menu icon (top right corner) and select Tools Extensions. Click on menu icon. Select 'Tools' and 'Extensions'
  2. Here, select Gemius and other malicious plugins and select trash icon to delete these entries. Look for malicious entries and delete each of them by clicking on the Trash bin icon
  3. Click on menu icon again and choose Settings Manage Search engines under the Search section. When in 'Settings', select 'Manage search engines...'
  4. When in Search Engines..., remove malicious search sites. You should leave only Google or your preferred domain name. Click 'X' to remove malicious URLs
  5. Reset Google Chrome
    Click on menu icon on the top right of your Google Chrome and select Settings.
  6. Scroll down to the end of the page and click on Reset browser settings. When in 'Settings', scroll down to 'Reset browser settings' button and click on it
  7. Click Reset to confirm this action and complete Gemius removal. Click on 'Reset' button to complete your removal
WindowsMac OS XInternet ExplorerMicrosoft EdgeFirefoxGoogle ChromeSafari

Uninstall Gemius from Safari

  1. Remove dangerous extensions
    Open Safari web browser and click on Safari in menu at the top left of the screen. Once you do this, select Preferences. Click on 'Safari' and select 'Preferences'
  2. Here, select Extensions and look for Gemius or other suspicious entries. Click on the Uninstall button to get rid each of them. Go to 'Extensions' and uninstall malicious add-ons
  3. Reset Safari
    Open Safari browser and click on Safari in menu section at the top left of the screen. Here, select Reset Safari.... Click on 'Safari' and select 'Reset Safari...'
  4. Now you will see a detailed dialog window filled with reset options. All of those options are usually checked, but you can specify which of them you want to reset. Click the Reset button to complete Gemius removal process. Select all options and click on 'Reset' button

About the author

Ugnius Kiguolis
Ugnius Kiguolis - The mastermind

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References

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