Microbes Virus

 Virus Name:  Microbes 
 V Status:    Common 
 Discovered:  June, 1990 
 Symptoms:    BSR 
 Origin:      Bombay, India 
 Eff Length:  N/A 
 Type Code:   BR - Floppy Boot Sector Infector 
 Detection Method:  ViruScan, F-Prot, NAV, Sweep, AVTK, 
                    IBMAV, NAVDX, VAlert, PCScan, ChAV 
 Removal Instructions:  M-Disk, or DOS SYS command 
 General Comments: 
       The Microbes virus was isolated in June, 1990 in India.  It is a 
       memory resident boot sector infector of diskettes boot sectors. 
       The Microbes virus becomes memory resident when a system is booted 
       from a disk infected with the Microbes virus.  The system may hang 
       on this boot, and inserting a diskette to boot from will result in 
       this new diskette becoming infected.  At least on the author's XT 
       test system, the system could not successfully boot with the 
       Microbes virus present without powering off the system and 
       rebooting from a write protected master boot diskette. 
       As with other boot sector infectors, Microbes can be disinfected 
       from system diskettes by powering off the system and booting from 
       a known-clean, write-protected master boot diskette for the system. 
       The DOS SYS command can then be used to recreate the boot sector 
       on the diskette.  For non-system data diskettes, the programs and 
       data files on the infected data diskette can be copied with the DOS 
       COPY command to a non-infected diskette, and then the original 
       diskette reformatted. 

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