I recommend you UnHackMe - Ultimate Malware Killer for fast malware removal:
Free Download Fully Functional 30-day Trial. No credit card is required.
Reviews. EULA. Privacy Policy. Uninstall.
The file %SysDir%\KAVA.EXE is a computer worm.
The worm %SysDir%\KAVA.EXE is a self-replicating malicious program,
which uses a computer network to send copies of itself to other
computers.
You must fix the %SysDir%\KAVA.EXE problem as soon as possible!
Delete the file %SysDir%\KAVA.EXE from all infected computers in your network.
Set up your network firewall against %SysDir%\KAVA.EXE intervention.
%SysDir%\KAVA.EXE Information and Removal:
MD5 of KAVA.EXE = FAED5570CCA8F5B2F3710B692DE7DCF6
KAVA.EXE size is 77824 bytes.
Full path on a computer: %SYSTEM%\KAVA.EXE
Related Files:
%TEMP%\LIVEUPDATE360_769_.EXE
%SYSTEM%\831360.C
%SYSTEM%\DRIVERS\IPHOOK.SYS
%SYSTEM%\KAVA.EXE
%SYSTEM%\XITUPINF.DAT