Summary
Dishonest antivirus software which tricks users into buying or installing it, usually by infecting a user's computer, or by pretending the computer is infected.
Removal
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
Check for the latest database updates
First, check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
Technical Details
Rogue:W32/SpywareSheriff is an rogue antispyware application that uses false and/or misleading scan results and questionable interface design to push the user into purchasing a license. In some cases, Spywaresheriff is advertised by a trojan with a hoax message that the system is unsafe. The trojan, detected as not-virus:Hoax.Win32.VB.l, does not install the antispyware application but simply generates a message that the system is unsafe:
Clicking on the message displayed above will open the computer's web browser to a page from which SpywareSheriff can be downloaded. It is also possible to find, download and install this application without being pushed by a trojan. Search engine results can also lead to the discovery of spywaresheriff.com and a user can decide to install it on their own. The scan results however, will still contain false positives.
Activity
Once installed, SpywareSheriff starts automatically during the boot process and performs a scan for spyware. It then displays the fake results of the scan, saying that the system is infected, as seen in the screenshots below:
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The message above was generated on a previously clean system image. Note that the third item listed is telnet.exe, a Microsoft application installed with the Windows Operating System. The first and second items listed in this example are the trojan malware referred to above. The only simple way to close the application is to register for the license, and the license is required for any cleaning of supposedly detected malware. The SpywareSheriff antispyware application itself is not necessarily harmful to the user's computer.
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