Most antivirus programs identify UAC.exe as malware—for example TrendMicro identifies it as TROJ_GEN.R47C1AM, and Microsoft identifies it as TrojanSpy:Win32/Malintent.
The UAC.exe file is a software component of RS Stealer Source by Microsoft.
When a task that requires administrative privileges in Windows Vista, Windows 7, or Windows Server 2008 is performed the User Account Control (UAC) dialog box displays. User Account Control limits applications to standard user privileges, even in a user account with administrator privileges assigned to it. When applications are run they are run as a standard user, unless they are specifically approved to have administrator privileges.
UAC stands for User Account Control
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Description: UAC.exe is not essential for Windows and will often cause problems. The UAC.exe file is located in a subfolder of "C:\Program Files".
The file size on Windows 10/8/7/XP is 271,360 bytes.
There is no description of the program. The program has no visible window. The application is loaded during the Windows boot process (see Registry key: Run, MACHINE\Run). UAC.exe is not a Windows system file. UAC.exe is able to record keyboard and mouse inputs and manipulate other programs. Therefore the technical security rating is 70% dangerous.
Recommended: Identify UAC.exe related errors
If UAC.exe is located in the C:\Windows folder, the security rating is 96% dangerous. The file size is 154,112 bytes. There is no information about the author of the file. The UAC.exe file is an unknown file in the Windows folder. The program has no visible window. The software is loaded during the Windows boot process (see Registry key: Run, MACHINE\Run). The process listens for or sends data on open ports to a LAN or the Internet. The UAC.exe file is not a Windows system file.
If UAC.exe is located in a subfolder of the user's profile folder, the security rating is 32% dangerous. The file size is 85,504 bytes. The program has a visible window. The software is loaded during the Windows boot process (see Registry key: Run, MACHINE\Run). The UAC.exe file is not a Windows system file. UAC.exe is able to record keyboard and mouse inputs.
Important: You should check the UAC.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.
The following programs have also been shown useful for a deeper analysis: ASecurity Task Manager examines the active UAC process on your computer and clearly tells you what it is doing. Malwarebytes' well-known Banti-malware tool tells you if the UAC.exe on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.
A clean and tidy computer is the key requirement for avoiding PC trouble. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic 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 6resmon 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 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.