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Security Shield

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Security Shield
TypeRogue Antivirus
PlatformMicrosoft Windows
File Type.exe
Alias(es)Rogue:Win32/Winwebsec (Microsoft) Trojan.Win32.FakeAV.wly (Kaspersky) Win32/Adware.SecurityTool (ESET) FakeAlert-AVPSec.k (McAfee) Mal/FakeAV-EE (Sophos) TROJ_FAKEAV.BKC (Trend Micro) SecurityShieldFraud (Symantec) Fake utorrent (other)
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Security Shield is a rogue security product that pretends to find malicious code on a victim's machine in order to frighten the user into purchasing the application.


When run, the malware performs a fake scan of the system, and falsely claims that a number of files on the system are infected with malware. Should users request that it clean the reported infections, it advises them that they need to pay money to register the program in order for it to do so. 

The malware also checks if the Internet Explorer or Mozilla Firefox web browsers are running on the system by monitoring any open window with the following class names:

  • IEFrame
  • MozillaUIWindowClass

After installation, and upon each subsequent re-boot of the system, Security Shield prevents the user from launching any application by terminating its process and displaying a message that falsely claims that the process is infected.

Security shield, avoids terminating the following processes:

  • iexplore.exe
  • firefox.exe
  • wscntfy.exe
  • shutdown.exe
  • avcheck.exe
  • wuauclt.exe
  • soft_cleaner.exe