How to Remove Downloader.Trojan?

Downloader.Trojan is a malicious downloading program, which can execute downloading task and install malicious software secretly in the background. When you are infected by Downloader.Trojan, there are always many strange file names in the list of Process Manager. Sometimes, Downloader.Trojan exists by sneaking into the dll file of Explorer.exe. It is one of the most stubborn viruses that many anti-virus programs can do nothing to it because this virus will appear again and again after being removed. This is a delicate task. However, we can still find out how to fix this problem.

Remove Downloader.Trojan by deleting IE temporary files.

If careful enough, you will see that there is a file named XXX.dll detected by your anti-virus program. Once you find this file and delete it as well as the IE temporary file, Downloader.Trojan will have been removed by then. In most cases, you can find the IE temporary files in C:Documents and Settings. You can search the folder “Temporary Internet Files”, and delete all the files inside. When there are some files that can’t be removed, they probably are the running files of Downloader.Trojan. You can follow the instructions below to remove them.

1. Download a forcible anti-spyware program.
2. Run the Process Viewer and list the suspicious processes.
3. Use a File Shredder tool to completely remove the suspicious files.

Note:

Files removed by File Shredder tool can not be reverted. So you have to confirm whether you have chosen the right files to remove before executing.

Remove Downloader.Trojan by using the File Deletion of Spyware Cease.

Go to C:WINDOWSsystem32 and find the infected files, which should be named after DLL and be composed of letters and numbers. Run Spyware Cease and use the File Deletion function. Add the files that you want to remove into the list and then click Delete button. Till now, go to C: WINDOWSsystem32drivers and find the ×.sys file (×.sys file refers to the same file mentioned previously.) Remove ×.sys file on the same method.

Go to Start > Run > Type regedit to open the Registry Editor. Search for the following three paths separately and delete the files which are named with Downloader.Trojan.

HKEY_LOCAL_MACHINESYSTEMControlset001Services

HKEY_LOCAL_MACHINESYSTEMControlset002Services

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServices

The above are the methods for manually removing Downloader.Trojan from your system. If you still can’t remove Downloader.Trojan, you can use the Online Scan function of Spyware Cease to scan your system and completely remove the virus.

Source: http://www.articlesbase.com/security-articles/how-to-remove-downloadertrojan-1213097.html