Ana.exe may be a malicious file and critical system problem that is mainly caused by an unstable system registry or malicous system files that are required to run Windows smoothly. Ana.exe may also deliver fake error messages related to Windows problems. Ana.exe may be a component of rogue ani-spyware applications such as Personal Shield Pro, which uses ana.exe as its process. Ana.exe may also be associated with some backdoor Trojan. Delete Ana.exe as quickly as possible.