Search notes:

Registry: HKEY_LOCAL_MACHINE\SAM\SAM\Domains\Account\Users\000001F4

0x1F4 = 500. 500 is a SID's suffix for an administrator.

F

The value of F stores the password of the administrator

V

Byte 0x38 determines if the administrator account is activated (0x11 = disabled, 0x10 = activ).

Index