After searching the web for hours and hours , I found the solution :
It's alga.exe Trojan, the following link explains it all.
http://www.edwinraja.com/how-to-remove-alga-exe-trojan-pws.html
How To Remove alga.exe Trojan PWSUnHackMe, Junk Removal Tool, HijackThis or Microsoft Security Essential, those antiviruses have failed to detect this alga.exe trojan virus.
alga.exe is a malware related executable file and runs in Task Manager as the process alga.exe. Most often it creates web page called web.html inside “C:\Users\<user>\AppData\Local\Microsoft\Windows\Temporary Internet Files”
folder and launches web browser to load (file:///C:/Users/<user>/AppData/Local/Microsoft/Windows/Temporary%20Internet%20Files/web.html) everytime there is internet connection available or at computer startup.
If your computer is having infected with this virus, there is a solution that might help with having to be done manually.
Steps Of How To Remove
1.Check to see if there is installed program named “setup” in your program lists and Uninstall with “Your Uninstaller!” with super mode (recommended) or go to Control Panel » Uninstall a program » right click “setup” name and Uninstall
2.Remove C:\Windows\System32\config\systemprofile\AppData\Local\Svchost folder which contains alga.exe or C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Svchost for x64 system.
3.Delete alga.exe from C:\Users\<user>\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup folder
4.Delete patch.dll from C:\ProgramData folder
5.Restart computer