How to remove the scmon virus

Most antivirus programs identify scmon.exe as malware—for example Kaspersky identifies it as, and Symantec identifies it as Backdoor.Trojan.

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 scmon.exe malware

Scmon.exe file information

The process known as Smart card monitoring belongs to software CardOS API or stub by Siemens Informatica S.p.A (

Description: Scmon.exe is not essential for the Windows OS and causes relatively few problems. The scmon.exe file is located in the C:\Windows\System32 folder. The file size on Windows 10/8/7/XP is 147,456 bytes. 
The program has no visible window. The file is an unknown file in the Windows folder. The software is loaded during the Windows boot process (see Registry key: MACHINE\User Shell Folders, MACHINE\Run, Run). The scmon.exe file is not a Windows core file. Scmon.exe is able to record keyboard and mouse inputs. Therefore the technical security rating is 60% dangerous, however you should also read the user reviews.

Recommended: Identify scmon.exe related errors

External information from Paul Collins:

Important: You should check the scmon.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.


User Comments

CardOS API is a software for the digital signature with smart card.. Is not a backdoor, and is needed for the correct functionally of Siemens Smart Card Monitoring. CardOS API is a software needed by Dike and DikeUtil, two software applications used in Italian accountancy to manage practices with the Chamber of Commerce, the Revenue Agency (Agenzie delle Entrate), ecc..
  Luca Bognolo   (further information)

Summary: Average user rating of scmon.exe: based on 2 votes with 1 user comment. One user thinks scmon.exe is essential for Windows or an installed application. One user thinks it's probably harmless.

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Best practices for resolving scmon issues

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

scmon.exe [all]