Drever.B is a malicious SIS file trojan that disables the automatic startup from Simworks Symbian Anti-Virus software.
Drever.B does not affect F-Secure Mobile Anti-Virus.
Drever.B can be disinfected easily by using F-Secure Mobile Anti-Virus available from https://www.f-secure.com/estore/avmobile.shtml
Or you can uninstall it by uninstalling the SIS file in which Drever.C was installed from using application manager
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See the manual for your F-Secure product on the Help Center.
Submit a file or URL for further analysis.
Spreading in: Simworks_update.sis
Drever.B drops non-functional copy of the bootloader used by Simworks Symbian Anti-Virus. This non-functional copy overwrites the original file, causing target software not to load automatically when the phone boots.