The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the winsys.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.
The process known as DOT MFC Application or Aurthor: Ben Nelson or Module or WinLog Daemon Service
belongs to software DOT Application or Winlog or winsys32 or NNC module
by Microsoft (www.microsoft.com) or NoName or Daemon (www.daemon-tools.cc) or MLabs (www.mlabs.com).
Description: Winsys.exe is not essential for Windows and will often cause problems. The file winsys.exe is located in the C:\Windows\System32 folder.
Known file sizes on Windows 8/7/XP are 135,168 bytes (51% of all occurrences), 200,704 bytes and 6 more variants.
The software has no file description. Winsys.exe is not a Windows core file. The program has no visible window. Winsys.exe is located in the Windows folder, but it is not a Windows core file. The program starts upon Windows startup (see Registry key: MACHINE\Run, Run, MACHINE\RunServices, Winlogon\Shell, DEFAULT\Run). Winsys.exe is able to record keyboard and mouse inputs. Therefore the technical security rating is 63% dangerous, however you should also read the user reviews.
Recommended: Identify winsys.exe related errors
External information from Paul Collins:
There are different files with the same name:
Important: Some malware camouflages itself as winsys.exe, for example W32.SillyFDC or Adware.Gen (detected by Symantec), and Worm:Win32/Autorun.BZ or VirTool:Win32/VBInject (detected by Microsoft). Therefore, you should check the winsys.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.
A clean and tidy computer is the key requirement for avoiding problems with winsys. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.
Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off doing a repair of your installation, or in the case of Windows 8, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.
To help you analyze the winsys.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.