What is smumhook.dll?

Smumhook.dll is a Windows DLL file. DLL is the abbreviation for Dynamic Link Library. DLL files are needed by programs or web browser extensions, because they contain program code, data, and resources. The following information can help you determine if smumhook.dll is a Windows system file or if it belongs to an application that you can trust.

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Smumhook.dll file information

The process known as smumhook.dll belongs to software Spyware Doctor or PC Tools Internet Security (version 2009) or Behavior Guard Add-on or AVG Free by PC Tools (

Description: Smumhook.dll is not essential for Windows and will often cause problems. Smumhook.dll is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of the user's "Documents" folder or in a subfolder of the user's profile folder. Known file sizes on Windows 10/8/7/XP are 146,312 bytes (34% of all occurrences), 142,728 bytes and 7 more variants. 
A .dll file (Dynamic Link Library) is a special type of Windows program containing functions that other programs can call. This .dll file can be injected to all running processes and can change or manipulate their behavior. It is a Verisign signed file. There is no file information. The program has no visible window. There is no detailed description of this service. It can change the behavior of other programs or manipulate other programs. The file is not a Windows system file. It is digitally signed. Therefore the technical security rating is 57% dangerous, however you should also read the user reviews.

Uninstalling this variant: In the event of any problems with smumhook.dll, you could also do the following:
  1) uninstall the software Spyware Doctor or PC Tools Internet Security using the Uninstall a Program function of Windows Control Panel (Windows: Start, Settings, Control Panel, Uninstall a Program)
  2) look for help [1][2] from the software company Pctools
  3) update [1][2] the program.

Recommended: Identify smumhook.dll related errors

Important: Some malware camouflages itself as smumhook.dll, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the smumhook.dll 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

Ungefährlich (Spyware Doctor)
Supposed to be a PC Tools file
Why does it get linked in with a program build in Visula Studio 2005?
The process belongs to the software Spyware Doctor by PC Tools. File smumhook.dll should be a Verisign signed file.
  Cypher   (further information)
looks like a Spyware Doctor component, still don't trust it!
Do not know much besides it is associated with Spyware Doctor, Although I have heard bad things about Spyware Doctor, I assume it is not dangerous although I could be wrong...
  Beau D   (further information)
It has been slowing down my laptop
its not harmfull, its helpfull. without it, anti spyware program "spyware doctor" would not work correctly.
  awsome guy  

Rating chart

Summary: Average user rating of smumhook.dll: based on 10 votes with 8 user comments. 4 users think smumhook.dll is essential for Windows or an installed application. 3 users think it's neither essential nor dangerous. One user suspects danger. 2 users think smumhook.dll is dangerous and recommend removing it. 2 users don't grade smumhook.dll ("not sure about it").

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Best practices for resolving smumhook issues

A clean and tidy computer is the key requirement for avoiding problems with smumhook. 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 smumhook.dll 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.

Other processes

smumhook.dll [all]