EXE_Bug.A - Virus Details EXE_Bug.A Aliases: CMOS Killer Size: 512 KB Frequency: 15 Characteristics: Infects MBR Infects diskette boot record Infects EXE files Memory resident Multipartite virus Does random, less obvious, damage over time Modifies CMOS Information: CMOS Modification: CMOS is altered to indicate that no drive A: exists, to force the system to boot from the hard drive. Random Damage: Trojanizes .EXE files on the hard disk so that they overwrite the first track of the hard disk when they are run. Trojanizes .EXE files on floppy disks by turning them into EXE_Bug droppers. Trojanized .EXEs are overwritten and thus destroyed. Back to the Virus List page Virus Databases Virus Links Virus Research Security About Us Products Updates Support Resellers Purchase Contact Us  Home Command Software · Inc 1061 East Indiantown Road · Suite 500 Jupiter · FL   33477 USA