You did not get hacked. Theoretically, the MAC Address is a unique and hardware-stored value (firmware, ROM), so it cannot be changed. However, there are tools that can spoof it, such as MACMan
. Your MAC address is just probably spoofed by some built-in feature/software.
I did a little bit of research and it looks like it's your kernel's fault. I found this in its changelog:
13/09] Version 1.7.2 :
- CM10.2 : Fixed keys backlight disabling
- CM10.2 : Fix network "arrows" not showing correctly
- bcmdhd : Disable multicast on sleep & allow mac adress changing
- Ramfs : Fixed booting problem on some sammy roms as 2ndrom
- Stweaks : Raised pegasusq hotplug max values
It probably modified the MAC address "on its own" (as in a built-in feature) or it was modified by another application.
As about reverting to your original MAC address, try flashing another kernel/ROM (the stock one, for example).