Yes I had the same file (malware in my laptop.
The remedy is to sign on as first one user which gets the file System Tool 2011 going,
then switch users (but don't log-off).
When you logon as a second user QUICKLY use the taskmanager CTRL ALT DEL to stop the following process
switch back to the first user and open file manager to view ALL HIDDEN FOLDERS AND FILES
Look in C:|programdata (folder) and delete the above FILE and any other files in the folder !!
Then delete the entire folder and restart your antivirus software
You can find the System Tool's main exe details by going to another users login because it affects only one particular account or by going in safe mode. Find the location of the 1Hgfsef48.exe (something like that) from task manager (show all users processes) and the name will be a random list of letters. Kill the .exe and then the folder (usually of the same name) under C:\Documents and Settings\All Users\Application Data\1Hgfsef48. This should stop System Tool scanner. Then scan your computer with MalwareBytes antimalware or Hitman Pro to remove the remains of additionally installed malware. Both programs are free.
Thanks I will give it a try