Winlogon.exe is a system of integrated system of Microsoft in Windows OS and is necessary for authentication (logging/disturb) to the user of a system or for checking the activation to it (of the system). Winlogon is also responsible for system protection By the exact delimitation of registered user permission (eg, the administrator user has full control and regular users usually have only access read-only).
Due to the fact that it is an essential process for Windows, Winlogon.exe is the target of many programe malware Which, either attaches to it in the case of a possible infection, or "borrows" the name to mislead. The legitimate location of this system process will always be C:WindowsSystem32. If you discover this process in another location on hdd, or notice that it has begun to consume abnormally many resources, we recommend making a thorough scan of the system because, most likely, this is a virus (worm), trojan or Adware.
One of the most famous Trojans affecting the Winlogon.exe process is Injury (or Virtumondo, or MS Juan), Trojan "available" in multiple variants, so that the infections caused by them vary from benign infections up to very severe (in which case formatting and reinstalling the system is the only solution). Some of the symptoms of a Vundo infection are:
- advertising popups for fake antivirus
- Screensaver with Blue Screen of Death
- Disable Windows Automatic Updates
- Disable Task Manager, Registry Editor and msconfig
- the impossibility of booty in Safe Mode
- repeated errors explorer.exe
- the inaccessibility of some sites, most of some security products
- Drawing up the space on HDD
- rewriting or renaming some dll-uri
- Changing the registers so that it reactivates to each restart or start of the system
Numerous other trojans or viruses use names like Winlogon.exe, an example being Winiogon.exe (i uppercase instead of l), process mostly associated with The Win32 Polimorf virus (Unfortunately, it can only be removed by a complete formatting and a reinstallation of the system), very common and common in recent years. That's why We recommend that you make all the updates, especially antivirus, in time, thus maintaining a high security of the system.
