Ignorant Virus

 Virus Name:  Ignorant 
 V Status:    Rare 
 Discovered:  April, 1994 
 Symptoms:    .COM & .EXE file growth; Hard Disk MBR altered; 
              decrease in total system & available free memory 
 Origin:      Unknown 
 Eff Length:  1,979 Bytes 
 Type Code:   PRhAKX - Parasitic Resident .COM, .EXE, and MBR Infector 
 Detection Method:  ViruScan, F-Prot, Sweep, IBMAV, AVTK, 
                    NAV, NAVDX, VAlert, PCScan, 
                    NProt, AVTK/N, NShld, Sweep/N, IBMAV/N, NAV/N 
 Removal Instructions:  Delete infected files & DOS 5.0+ F-Disk /MBR 
 General Comments: 
       The Ignorant virus was submitted in April, 1994.  Its origin or 
       point of isolation is unknown.  Ignorant is a memory resident 
       fast infector of .COM and .EXE programs, including COMMAND.COM. 
       It also infects the system hard disk Master Boot Record (Partition 
       Table Sector), thus it is a multi-partite virus.  Ignorant is also 
       a stealth virus, hiding the file length increase on infected files. 
       When the first Ignorant infected program is executed, this virus 
       will install itself memory resident at the top of system memory but 
       below the 640K DOS boundary, not moving interrupt 12's return.  Total 
       system and available free memory, as indicated by the DOS CHKDSK 
       program, will have decreased by 5,120 bytes.  Interrupt 21 will be 
       hooked by the virus in memory.  Also at this time, the virus will 
       infect the system hard disk master boot record if it was not 
       previously infected. 
       Once memory resident, the Ignorant virus will infect programs, 
       including .COM, .EXE, .BIN, and .OVL files, when they are executed 
       or opened for any reason.  Infected programs will have a file length 
       increase of 1,979 bytes, though the file length increase will be 
       hidden when the virus is memory resident.  The program's date and 
       time in the DOS disk directory listing will not be altered.  The 
       following text strings are encrypted within the Ignorant viral 
               "Ignorance is Strength" 
               "Freedom is Slavery" 
               "War is Peace" 
               "[1984] bY [T„L”N

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