How to remove the prkiller virus

Most antivirus programs identify prkiller.exe as malware—for instance TrendMicro identifies it as TROJ_KILLPROC.AC, and Symantec identifies it as Trojan Horse.

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.

Click to Run a Free Virus Scan for the prkiller.exe malware

Prkiller.exe file information

Windows Task Manager with prkiller
Prkiller.exe process in Windows Task Manager

The process known as Process Killer appears to belong to software Process Killer by unknown.

Description: Prkiller.exe is not essential for Windows and will often cause problems. Prkiller.exe is located in a subfolder of "C:\Program Files" or sometimes in the C:\Windows\System32 folder or in a subfolder of the user's "Documents" folder. Known file sizes on Windows 10/8/7/XP are 38,400 bytes (93% of all occurrences), 14,336 bytes, 38,912 bytes or 25,600 bytes. 
There is no file information. The file is not a Windows core file. The program has no visible window. The software starts upon Windows startup (see Registry key: MACHINE\Run, MACHINE\User Shell Folders, User Shell Folders, Run). Prkiller.exe is able to record keyboard and mouse inputs, hide itself and monitor applications. Therefore the technical security rating is 70% dangerous.

Uninstalling this variant: The software vendor offers the option to uninstall the program using the Control Panel ⇒ Uninstall a ProgramProcess Killer.

Recommended: Identify prkiller.exe related errors

Important: You should check the prkiller.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.


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Best practices for resolving prkiller issues

The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active prkiller process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the prkiller.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.

Other processes

prkiller.exe [all]