Trend Micro Virus Alert: PE_LISIMA.A-O

PE_LISIMA.A-O is a destructive file infector virus, that prepends its code to every .EXE file that it finds. It may overwrite some files that it attempts to infect. It is also capable of modifying the system's HOSTS file, which prevents affected users from accessing certain Web sites, most of which are related to antivirus and security companies.

It was also found to be capable of sending files through Internet Relay Chat. This file infector may also attempt to terminate several antivirus and security-related processes and debugging tools, such as Process Explorer, Ethereal, TCPview, and bintext.

This virus is currently spreading in-the-wild and infecting computers that run on Windows 98, ME, NT, 2000, and XP.

If you would like to scan your computer for PE_LISIMA.A-O, or thousands of other worms, viruses, Trojans and malicious code, visit HouseCall, Trend Micro's free, online virus scanner at: http://housecall.trendmicro.com/