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Danger level 7
Type: Adware
Common infection symptoms:
  • Annoying Pop-up's
  • Shows commercial adverts
  • Connects to the internet without permission


Lcoupon looks like a useful application at first sight. The program is promoted on, but it is impossible to download it from there at the time of writing. Therefore, there is no doubt that Lcoupon is spread somehow differently because it is really prevalent. Researchers working at have managed to find out that this program mainly infects users who live in Russia, Ukraine, and France, whereas the origin of Lcoupon itself is Russia –its official web page has the .ru domain extension. Even though it is especially prevalent in the aforementioned countries, it does not mean that it cannot enter computers owned by people living somewhere else. Have you already encountered Lcoupon? If yes, the best idea would be to eliminate it from the system completely. Some users might find this rather challenging even though this program has an uninstall entry in Control Panel. If you belong to this group too, read through this article attentively.

Users might not know for some time that Lcoupon is installed because it does not start performing its activities the moment it enters the system. Of course, users can easily detect new files it adds. Research carried out by our specialists has shown that Lcoupon adds extensions to the web browsers it works on, i.e. Google Chrome and Mozilla Firefox, so you will definitely see extensions that belong to Lcoupon in the list of add-ons. What is more, you will find its main directories and files if you follow these paths (tap the Windows key + R, copy and paste the path in the box, and click OK):

  1. %localappdata%\lcoupon
  2. %UserProfile%\Local Settings\Application Data\lcoupon
  3. %APPDATA%\Microsoft\Windows\Start Menu\Programs\lcoupon
  4. %UserProfile%\Local Settings\Application Data\Google\Chrome\User Data\Default\Local Extension Settings\elmbcmlmdjfemolgapoecfhcmcjgdmbh
  5. %LOCALAPPDATA%\Google\Chrome\User Data\Default\Local Extension Settings\elmbcmlmdjfemolgapoecfhcmcjgdmbh.

“elmbcmlmdjfemolgapoecfhcmcjgdmbh” is the extension ID which you will notice if you enable the Developer mode in the Add-ons Manager on Google Chrome. We are sure that Lcoupon does not limit itself to these changes. It has been also noticed that Lcoupon adds its executable file to the %programfiles% directory. Last but not least, it seems that it also adds the lcoupon value to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run in order to be able to start together with Windows and thus work from the moment a user turns on his/her computer.

Lcoupon is not a unique program because it has replaced Everysale, Likecoupon, and Couponriser. If you have already encountered any of these programs, you will probably suspect that Lcoupon will show ads only even though it says that it will provide you with discounts that will help to save money at online stores. Advertisements displayed by this advertising-supported application are really annoying – they will keep appearing on your screen without prior notice, which means that the content you read will be covered. Moreover, advertisements might also be associated with third-party web pages. It means that you might be redirected to a bad web page one day. As you can see, you might cause harm to your PC by keeping Lcoupon on board, so it would smart to eliminate it for the sake of your PC’s safety.

Such personal details as your browsing history, search queries, the ads you tend to click on, your IP address, and other technical details are interesting to Lcoupon. We believe that this adware program collects these details in order to show targeted commercial advertisements. It does not seem that Lcoupon is going to touch your personal information; however, we still suggest being cautious. We also believe that it is better to remove this adware as soon as possible because it might still extort some facts about you.

You should be very careful because there are hundreds of other adware programs that show commercial advertisements and collects information about users on the web. They tend to enter systems together with freeware and shareware, so if you tend to download programs from various third-party web pages, torrents, and similar sites, you should install a security tool on the system. It will not allow untrustworthy software to enter your PC ever again.

Below are provided instructions which will help you to remove Lcoupon. If you still see ads after you get rid of this threat manually, scan your system with an automatic malware remover, such as SpyHunter. It will fully remove Lcoupon for you. You should also do that in order to make sure that there no other remaining threats on your computer.

Delete Lcoupon

  1. Tap the Windows key + R to launch RUN.
  2. Copy and paste the following paths one by one into the box and click OK: %localappdata%\lcoupon, %UserProfile%\Local Settings\Application Data\lcoupon, %APPDATA%\Microsoft\Windows\Start Menu\Programs\lcoupon, %UserProfile%\Local Settings\Application Data\Google\Chrome\User Data\Default\Local Extension Settings\elmbcmlmdjfemolgapoecfhcmcjgdmbh, and %LOCALAPPDATA%\Google\Chrome\User Data\Default\Local Extension Settings\elmbcmlmdjfemolgapoecfhcmcjgdmbh .
  3. Delete all the files you find in these directories.
  4. Repeat the 1st step again and enter regedit.
  5. Move to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run and delete the lcoupon value.
  6. Go to HKEY_LOCAL_MACHINE\SOFTWARE\Wow64Node\Microsoft\Windows\CurrentVersion\Uninstall\lcoupon (32-bit Windows) or HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\lcoupon (64-bit Windows) , right-click on the registry key, and delete it.
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