Milano Virus

 Virus Name:  Milano 
 V Status:    Rare 
 Discovered:  August, 1993 
 Symptoms:    .EXE file growth; file date/time changes; 
              decrease in total system & available free memory 
 Origin:      Italy 
 Eff Length:  2,078 Bytes 
 Type Code:   PRhE - Parasitic Resident .EXE Infector 
 Detection Method:  ViruScan, Sweep, F-Prot, AVTK, IBMAV, NAV, 
                    NAVDX, VAlert, PCScan, 
                    NShld, Sweep/N, AVTK/N, IBMAV/N, NAV/N, LProt 
 Removal Instructions:  Delete infected files 
 General Comments: 
       The Milano virus was received in August, 1993, and is originally 
       from Italy.  Milano is a memory resident infector of .EXE programs, 
       though it does not infect very small .EXE files. 
       When the first Milano 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 4,160 bytes.  Interrupts 21 and 28 
       will be hooked by the virus in memory. 
       Once the Milano virus is memory resident, it will infect .EXE 
       programs when they are executed.  Infected programs will have a file 
       length increase of 2,078 bytes with the virus being located at the 
       end of the file.  The program's date and time in the DOS disk 
       directory listing will have been updated to the current system date 
       and time when infection occurred.  No text strings are visible 
       within the viral code in infected programs. 
       It is unknown what Milano does besides replicate. 

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