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 sc.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.
Description: Sc.exe is not essential for the Windows OS and causes relatively few problems. The sc.exe file is located in the C:\Windows folder.
Known file sizes on Windows 10/8/7/XP are 360,960 bytes (66% of all occurrences) or 385,024 bytes.
There is an icon for this program on the taskbar next to the clock. The program has a visible window. There is no file information. The file is not a Windows system file. The file is located in the Windows folder, but it is not a Windows core file. Sc.exe is able to record keyboard and mouse inputs and monitor applications. Therefore the technical security rating is 40% dangerous, however you should also read the user reviews.
Recommended: Identify sc.exe related errors
If sc.exe is located in a subfolder of "C:\Program Files", the security rating is 69% dangerous. The file size is 360,960 bytes (50% of all occurrences) or 695,808 bytes. There is no information about the author of the file. The application starts when Windows starts (see Registry key: Run, win.ini, User Shell Folders). Sc.exe is not a Windows core file. The program has no visible window. Sc.exe is able to record keyboard and mouse inputs and monitor applications.
If sc.exe is located in a subfolder of C:\, the security rating is 28% dangerous. The file size is 12,184,624 bytes. The program has a visible window. The application has no file description. The program uses ports to connect to or from a LAN or the Internet. Sc.exe is not a Windows core file.
If sc.exe is located in a subfolder of C:\Windows, the security rating is 0% dangerous. The file size is 37,376 bytes.
If sc.exe is located in a subfolder of the user's profile folder, the security rating is 84% dangerous. The file size is 129,024 bytes.
External information from Paul Collins:
Important: Some malware camouflages itself as sc.exe, for example Trojan Horse (detected by Symantec), and Program:Win32/ProtectionSystem (detected by Microsoft). Therefore, you should check the sc.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 sc. 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 repairing of your installation or, for Windows 8 and later versions, 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 sc.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.