Most antivirus programs identify 1.exe as malware—for instance F-Secure identifies it as Gen:Heur.MSIL.Krypt.3 or Suspicious:W32/Malware!Online, and Kaspersky identifies it as Virus.Win32.Virut.ce or Trojan.Win32.Agent.alqhv.
The free file information forum can help you find out how to remove it. If you have additional information about this file, please leave a comment or a suggestion for other users.
Description: 1.exe is not essential for Windows and will often cause problems. The 1.exe file is located in C:\.
Known file sizes on Windows 10/8/7/XP are 180,224 bytes (33% of all occurrences), 125,456 bytes or 20,480 bytes.
The software has no file description. The program is not visible. The file is not a Windows core file. 1.exe appears to be a compressed file. Therefore the technical security rating is 43% dangerous, however you should also read the user reviews.
Recommended: Identify 1.exe related errors
If 1.exe is located in a subfolder of the user's profile folder, the security rating is 41% dangerous. The file size is 93,184 bytes (50% of all occurrences) or 1,744,465 bytes. There is no file information. 1.exe is not a Windows core file. 1.exe is able to record keyboard and mouse inputs, monitor applications and manipulate other programs.
If 1.exe is located in a subfolder of C:\, the security rating is 0% dangerous. The file size is 506,995 bytes. User opinion: not dangerous There is no description of the program. The program has no visible window. 1.exe is not a Windows system file. 1.exe is able to record keyboard and mouse inputs, monitor applications and manipulate other programs.
If 1.exe is located in the Windows folder for temporary files, the security rating is 46% dangerous. The file size is 281,600 bytes.
If 1.exe is located in a subfolder of C:\Windows, the security rating is 72% dangerous. The file size is 59,815 bytes.
If 1.exe is located in a subfolder of "C:\Program Files", the security rating is 46% dangerous. The file size is 110,208 bytes.
If 1.exe is located in the C:\Windows\System32 folder, the security rating is 96% dangerous. The file size is 77,312 bytes.
Important: You should check the 1.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: Security Task Manager examines the active 1 process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the 1.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 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.