1) You may have downloaded it knowingly or unknowingly mistaking it to be something else.
2) It may have automatically downloaded while you were visiting some harmful website
3) Your computer may have a trojan virus which in turn downloads such an application.

Recently I have noticed that the malware authors are also keeping track of the removal instructions published on the internet. As soon as they think that the malware is exposed, they change the file/folder names and the locations where they are saved on the hard disk. So keeping this in mind you will require the latest information of the malware in order to be able to remove it.

If you happen to have the rogue installer, you can submit it to threatexpert site and get it analyzed. That will help you to get the precise information about the virus.

Family

The other similar fake applications are Winisoft family rogues - BlockDefense, Quick Heal Cleaner, SaveDefense, SaveSoldier, SaveKeep, System Cop, WiniBlueSoft, WiniFighter, Winishield, Trust Ninja

Trying System Restore

If you know the duration since your computer is infected, you can try to restore your computer at a prior date, that will work like a miracle in removing the infection

• Using System Restore in windows XP
  • Using System Restore in windows Vista

Free removal tools

• Special tools to remove a single virus or a family of virus.
• Free Online virus scanners
• Fully functioning antivirus/ antispyware

• Free tools for windows XP
  
  
  • Free tools for windows Vista

Manual Removal

These are the steps to be taken, if you want to or need to remove the infected files manually

Boot in safe mode

Sometimes you will not be able to delete a file even if you find it, in that case you should boot in safe mode and then try to delete it/ them.

• How to boot in safe in windows XP

• How to boot in safe mode in windows Vista

Remove Processes from Task Manager

Press Ctrl Shift Esc to open Task Manager. See in the list of the processes for a processe/s named "Savekeeper.exe" and another process with a random name, for example ah87spjzmj.exe, select if found and press the End Process button, confirm and then close the Task Manager. There would also be a random exe file, you will have to use Windows Defender to see the path of a currently running program/ process and its publisher, so as to differentiate malware processes from processes belonging to legitimate publishers. You may find such processes listed under Unknown Publisher in windows defender.

• How to use Windows Defender in Windows Defender in xp">windows XP
  
  
  • How to use Windows Defender in Windows Defender in vista">windows Vista

• How to use Sysinternal's Process Explorer

Removing entry from windows startup

The system configuration can be started in xp and in vista by typing msconfig in the run box/ start menu search box. In xp by clicking on Start > run . The windows startup is reversible, therefore you can check / uncheck any entry from windows startup any number of times.

After the system configuration window is open, Click on the Startup tab, that will list all the programs that are scheduled to start with windows. Expand the middle column using your mouse pointer so that you can see the full path of the program. Locate and uncheck "Savekeeper" and an exe file with a random name such as ah87spjzmj.exe (look for any other suspicious names) Press Apply , Press Close/Ok , Select "Exit without restart" at the next prompt.

Disabling a Service

This malware creates a windows service named SavekeeperSvc. While still in the windows configuration utility, click on the services tab. Hide All the Microsoft services by checking in the box, and then look for a name SaveKeeperSvc, uncheck the box in front of its name if found, and the press Apply, press Ok, and restrat the computer at the next prompt.

View Hidden Files

Before you could delete SaveKeeper and its associated files you need to search for them, and before doing that you need to enable to view hidden files and folders

• How to Enable to View Hidden Files and Folders in Windows XP
  • How to Enable to View Hidden Files and Folders in Windows Vista

Deleting files

After restarting the computer, use the windows search utility to search for "SaveKeeper. This search will find all its folders on the hard disk , delete the folders from the hard disk.

Run CCleaner

After deleting SaveKeeper and its associated files , as there will be leftover entries in the windows regitry. CCleaner is a free temp files/registry cleaner, that will automatically clean the registry as well as remove the temp files . Click here to read more

Edit Registry

if you are comfortable in using the regedit command. You can search and delete keys mentioning "SaveKeeper" ans SaveKeeperSvc from the registry.

• How to edit registry in windows XP
  • How to edit registry in windows Vista

More Problems

If you are unable to open Task Manager, registry editor, System Restore, Folder Options etc

If the virus has disabled them. There are free tools and techniques to solve this problem. They are listed here.

Tools for Windows XP

Tools for Windows Vista

Use the System File Checker

If you want to make sure that the windows system files are not altered by the virus, and in case if they are altered then to repair them.

• How to run System File Checker utility in windows XP
  • How to run System File Checker utility in windows Vista

Unable to access security related sites

Using Firewall

Check your firewall for any suspicious communication from your computer to the internet and block it using firewall.