Doomboot.J is close variant to Doomboot.B. The major difference between
Doomboot.J and Doomboot.B is that the Doomboot.J does contain also
application files from Fontal.A.
If you have installed Doomboot.J, the most important thing is not to
reboot the phone and follow the disinfection instruction in this
description.
If you have rebooted the phone and the phone will not start again, the phone
can be recovered with hard format key code that is entered in the phone boot.
Please refer to your phone manual for the code.
1. Install F-Skulls.sis into infected phones memory card with a clean phone
2. Put the memory card with F-Skulls into infected phone
3. Start up the infected phone, the application menu should work now
4. Go to application manager and uninstall the SIS file in which you installed the Doomboot variant
5. Download and install F-Secure Mobile Anti-Virus to remove any files dropped by the Doomboot variant
http://www.f-secure.com/wireless/download
or with phone web browser
http://mobile.f-secure.com
6. Activate Anti-Virus and scan all files to make sure that your phone is clean from malware
Disinfection for the cases when phone is already rebooted and cannot start up
CAUTION! this method will remove all data on the device including calendar and
phone numbers
1. Power off the phone
2. Hold following three buttons down "answer call" + "*" + "3"
3. Keep holding the buttons and power on the phone
4. Depending on the model, you either get text "formatting" or startup dialog that
asks for initial phone settings
5. Your phone is now formatted and can be used again
Installation to system
Doomboot.J installs corrupted system binaries into C:\ drive of the phone.
When phone boots this corrupted binaries will be loaded instead of the correct
ones, and the phone will crash at boot.
In addition of installing the corrupted system binaries the Doomboot.J also
damages the application manager so that it cannot be uninstalled, and no new
applications can be installed before the phone is disinfected.
