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Danger level 9
Type: Trojans
Common infection symptoms:
  • Connects to the internet without permission
  • Installs itself without permissions
  • Shows commercial adverts
  • Slow Computer


TrojanSpy:MSIL/Popclik.A is a highly dangerous application, which works as a data thief (keylogger) and can easily gather any personal information, such as credit card or social security numbers, contact details, logins and passwords, ultimately collected by cyber criminals. It has been noticed that TrojanSpy:MSIL/Popclik.A travels through such internet sites as,,, and, which fool Windows users into downloading fake Chrome or Firefox browser upgrades, which actually hide the Trojan itself. So, if you want to keep your browsing activity and your personal data safe, remove TrojanSpy:MSIL/Popclik.A by deleting its malignant files.

You can be sure that TrojanSpy:MSIL/Popclik.A has invaded your computer if you notice kremtel.dll (located in C:\Documents and Settings\NetworkService\Local Settings\Application Data\kremtel.dll) or app.exe (C:\Program Files\System\Driver\ app.exe) processes running in your Windows system. These harmful TrojanSpy:MSIL/Popclik.A components are the core of the whole infection and need to be removed quickly in order for your Windows system to be safe from any harmful kyelogging activities.

App.exe is a file infector, which can modify any program files to disguise itself as a legal component and hide itself from being deleted. And it does exactly that with a legitimate app.exe file, which originally monitors applications’ activities and records system’s inputs. There is a way to see whether your app.exe file has been modified by a TrojanSpy:MSIL/Popclik.A component or not, simply by checking its size, as the original file can be either 1,720,360 bytes, 1,394,384 bytes, 1,110,016 bytes or 868,352 bytes, and the malicious component may vary from 36,864 bytes to 11,071,869 bytes.

The malignant app.exe is very cunning, and can resist interrogation of existing AV tools, so if you have them installed, it does not mean they will remove TrojanSpy:MSIL/Popclik.A from your system like any low-risk threat. App.exe can create processes, add them to the system’s boot-up, and copy them to multiple locations. The malicious file is also capable of using wininet.dll, which allows TrojanSpy:MSIL/Popclik.A components to copy your browsing activity.

To remove TrojanSpy:MSIL/Popclik.A, you have to use up-to-date antivirus and antispyware software, as only this combination will have enough “knowledge” about the Trojan’s features and its cunning habits. If you think you can delete TrojanSpy:MSIL/Popclik.A manually, consider this option wisely, and if you are not a Windows expert and have successfully removed malware before, do not waste any more time and install legitimate programs, which will do the complicated removal tasks for you.

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How to manually remove TrojanSpy:MSIL/Popclik.A

Files associated with TrojanSpy:MSIL/Popclik.A infection:


TrojanSpy:MSIL/Popclik.A DLL's to remove:


TrojanSpy:MSIL/Popclik.A processes to kill:


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