Casteggio Virus

 Virus Name:  Casteggio 
 V Status:    Rare 
 Discovery:   October, 1992 
 Symptoms:    .COM & .EXE growth; decrease in total system & available free 
 Origin:      Casteggio, Italy 
 Eff Length:  2,881 - 2,900 Bytes 
 Type Code:   PRhAK - Parasitic Resident .COM & .EXE Infector 
 Detection Method:  AVTK, F-Prot, ViruScan, Sweep, IBMAV, 
                    NAV, NAVDX, VAlert, PCScan, ChAV, 
                    NShld, Sweep/N, Innoc, NProt, AVTK/N, NAV/N, IBMAV/N, 
 Removal Instructions:  Delete infected files 
 General Comments: 
       The Casteggio virus was received from Italy in October, 1992 after 
       its isolation in the public domain in Casteggio, Italy.  Casteggio 
       is a memory resident infector of .COM and .EXE programs, including 
       When the first program infected with the Casteggio virus is executed, 
       the Casteggio virus will install itself memory resident at the top of 
       system memory but below the 640K DOS boundary.  Total system and 
       available free memory, as indicated by the DOS CHKDSK program, will 
       have decreased by 3,008 bytes.  Interrupts 1C and 21 will be hooked. 
       Once the Casteggio virus is memory resident, it will infect .COM and 
       .EXE programs when they are executed.  Infected programs will have a 
       file length increase of 2,881 to 2,900 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 not be altered.  No text strings are 
       visible within the viral code in infected programs. 
       It is unknown what Casteggio does besides replicate. 

Show viruses from discovered during that infect .

Main Page