DNS Chameleon Trojan is what

TROJAN/DNSCHANGER.AA "DNS Chameleon" Variant AA is a Trojan program that tamper with DNS settings on a user's computer. The "DNS Chameleon" variant AA runs after copying itself into the system directory, removing the original files from the virus. Modify the registry to achieve a power-on reboot. Listen for hacker instructions, tamper with DNS settings on the user's computer, and reduce the security settings on the infected computer, causing the infected computer to not connect to the network properly.