What is Trojan.Mournor

Trojan.Mournor is a Trojan horse that modifies system files and drops other files on to the compromised computer. The threat may arrive on the compromised computer as a file that looks similar to an image file icon.

Once executed, the Trojan.Mournor copies the original Windows explorer.exe application to the following locations:

* %System%\explorer.exe
* %Windir%\explorer.exe[15 RANDOM NUMBERS]

Then it copies itself to the following locations:

* %System%\SERVICES.EXE
* %System%\SYSANALYSIS.EXE
* %SystemDrive%\Mourn_Operator.exe

It also creates an autorun file so that it executes the mourn_operator.exe file automatically:
%SystemDrive%\AUTORUN.INF

Trojan.Mournor may also drop some non-malicious temporary files in the following folder:
%UserProfile%\Local Settings\Temp

The Trojan will delete the following file to prevent Windows File Protection from restoring the original Windows explorer.exe file:
%System%\dllcache\explorer.exe

The Trojan modifies the following Windows file with a copy of itself, so that it runs every time the explorer program starts:
%Windir%\explorer.exe

The Trojan may add registry entries in the following registry subkey:
HKEY_LOCAL_MACHINE\Microsoft\Windows\CurrentVersion\Run

The Trojan may modify registry entries in the following registry subkeys:

* HKEY_LOCAL_MACHINE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL
* HKEY_LOCAL_MACHINE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\HideFileExt

Technical Details of Trojan.Mournor

  • Full name: Trojan.Mournor
  • Date Appeared: 28 October 2008
  • Characteristic: Trojan Horse
  • URL:

Do I need to remove Trojan.Mournor

You can yourself search your computer manually, but it is not recommended unless you are a tech-geek. To save time and effort, we recommend you to download a FREE Scanner.

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Free Scanner for Trojan.Mournor

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How to Uninstall Trojan.Mournor scam

The best way for the removal of Trojan.Mournor is to install a good quality Anti-spyware Program and scan your system for any Trojan.Mournor infections.

Automatic removal of Trojan.Mournor is always good and complete as compared to any attempts to manually remove Trojan.Mournor, which may sometime lead to erroneous results. If you are not completely aware of all the files and registry entries used by this rogue trojan, then we do not recommend you to attempt for the manual removal of Trojan.Mournor.

Instructions to get rid of Trojan.Mournor

If you really want to remove the Trojan.Mournor infection on your system manually then proceed as follows.

Step 1: Kill the Trojan.Mournor ProcessesLearn how to do that

explorer.exe SERVICES.EXE SYSANALYSIS.EXE Mourn_Operator.exe

Step 2: Remove Trojan.Mournor files, folders and all associated Trojan.Mournor DLL files: Learn how to do that

explorer.exe System\\SERVICES.EXE System\\SYSANALYSIS.EXE SystemDrive\\Mourn_Operator.exe

UserProfile\Local Settings\Temp

Step 3: Uninstall Trojan.Mournor registry entries: Learn how to do that

HKEY_LOCAL_MACHINE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL
HKEY_LOCAL_MACHINE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\HideFileExt

Free Scan for Trojan.Mournor