Bootton.A is a SIS file trojan that is sent over bluetooth by
SymbOS/Onehop.A trojan.
In its structure Bootton.A is quite similar to Skulls family
trojans. With the exception that instead of replacing system
files with corrupted binaries,the Bootton.A uses application
that causes device to reboot.
Thus if a device is infected with Bootton.A, pressing menu button
or any system application button the device immediately reboots.
Bootton.A disables most of critical system functions and third party
file managers, so that even if the device wouldn't immediately reboot
it is still unusable before it is disinfected.
In addition of disabling applications on the phone, the Bootton.A also
installs modified Cabir that SymbOS/Onehop.A uses to distribute Bootton.A.
But this file does not get executed automatically, and even if started by
user is unable to send anything as the file it is trying to send does not
exist on the system.
Like Skulls.A the Bootton.A replaces the application icons with it's own
icon, this time the icon is a heart icon with the text "I-Love-U"
If Bootton.A is installed only the calling from the phone and answering
calls works. All functions which need some system application,
such as SMS and MMS messaging, web browsing and camera no longer function.
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. Press menu button until you get Symbian process menu, look for any applications with heart
icon. Kill the application processes with 'C' button.
5. Go to application manager and uninstall the SIS file in which you installed the Bootton.A
6. Download F-Secure Mobile Anti-Virus from http://phoneav.com and activate the Anti-Virus
7. Scan the phone and remove any remaining components of Bootton.A
8. Remove the F-Skulls with application manager as the phone is now cleaned
Installation to system
Bootton.A is a SIS file that installs small component that resets the
device if executed, this component is installed into locations where
it replaces system and third party applications.
Spreading in
ILoveU.sis
Payload
Replaces built in and third party applications with component that causes
device to reboot when executed.
