The WbeCheck trojan installs a spying component as 'pbsysie.dll' file to Internet Explorer. The DLL file is usually located in \Windows\ folder. This DLL filters HTTP requests of IE and it makes some changes in HTTP traffic.
All files detected as 'Trojan.Win32.WbeCheck' should be deleted from an infected system. If a trojan's file is locked and can't be deleted instantly, it should be deleted from pure DOS (in case of Windows 9x system) or renamed with a different extension (DLA for example) with further system restart (in case of NT-Based system). After restart the renamed DLL can be deleted.
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.
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