Dishonest antivirus or antispyware software which tricks users into buying or installing it, usually by infecting a user's computer, or by pretending the computer is infected.
Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.
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Rogue:W32/Spyguard is a typical rogueware family. Member of this family pose as a legitimate antivirus or antispyware application, usually by copying the name and/or looks of a legitimate application.Variants in the Spyguard family are also detected with the Generic Detection, Rogue:w32/Spyguard.gen!A.
Once installed, this program scans the computer system. It then displays fake alert messages indicating the system has been compromised. To fully use the product and/or to enable its disinfection functionality, the user is required to purchase a license. A message notifying the user of the 'infections' will also frequently pop up from the System Tray.
A typical installation from this rogueware family installs component files in:
- %Program Files%\ [Name of Application]
Where [Name of Application] is the name of the legitimate program that the rogueware is pretending to be, for example, Spyware Guard or System Guard.At the same time, the following files are installed in %WinDir%:
These files are usually backups of clean system files. A file named winscenter.exe is also saved in the %System% folder.Malicious components are then installed in :
- %allusers%\Application Data\Microsoft\Internet Explorer\Dlls
A typical installation from this rogueware family will add the following registry key:
- HKEY_LOCAL_MACHINE\Software\Spyware Guard