Threat Description

Renos

Details

Aliases: not-virus:Hoax.Win32.Renos
Category: Riskware
Type: Rogue AntispywareHoax
Platform: W32

Summary



Renos is a software that shows fake security warnings that are quite annoying. The aim of this software is to trick a computer user to download third-party cleaning utilities, usually anti-spyware scanners.



Removal



Manual Disinfection

F-Secure Anti-Virus may not be able to remove files, identified as Renos hoax automatically. So a user's action may be required to select proper disinfection action.

If a file, detected as not-virus:Hoax.Win32.Renos is an executable with DLL or EXE extension, located in Windows, Windows System or in a root folder of C: drive, this file can be safely deleted or renamed. Here are the instructions on how to remove infected files that F-Secure Anti-Virus does not clean automatically:

http://support.f-secure.com/enu/home/virusproblem/howtoclean/howtodeleteinfectedfile.shtml

Generic malware disinfection instructions can be found here:

http://support.f-secure.com/enu/home/virusproblem/howtoclean/



Technical Details



Typically when a Renos' executable file is run, it drops a DLL file into Windows System folder and registers it as a system component. The DLL is the main Renos component. It shows a blinking icon in System Tray and periodically (actually quite often to be annoying) shows a fake security warning:

When a user clicks on this alert, his web browser is redirected to a website that offers a cleaning utility (usually anti-adware) for download.

Renos executable file is usually dropped from certain websites that a computer user browses.





Description Created: Alexey Podrezov, January 16, 2006
Technical Details: Alexey Podrezov, January 16, 2006
Description Last Modified: Sean Sullivan, September 22, 2006; Sean Sullivan, November 8, 2006


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