Legalize Virus

 Virus Name:  Legalize 
 V Status:    Rare 
 Discovered:  May, 1992 
 Symptoms:    .COM & .EXE growth; decrease in total system and available 
              free memory; programs may not execute properly 
 Origin:      The Netherlands 
 Eff Length:  1,781 Bytes 
 Type Code:   PRhA - Parasitic Resident .COM & .EXE Infector 
 Detection Method:  ViruScan, F-Prot, Sweep, IBMAV, AVTK, 
                    NAV, NAVDX, VAlert, PCScan, ChAV, 
                    NShld, Sweep/N, NProt, AVTK/N, NAV/N, IBMAV/N, Innoc, 
 Removal Instructions:  Delete infected files 
 General Comments: 
       The Legalize virus was received from The Netherlands in May, 1992. 
       This virus is a memory resident infector of .COM and .EXE programs, 
       but not COMMAND.COM. 
       When the first Legalize infected program is executed, the Legalize 
       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 2,064 bytes.  Interrupt 21 will be hooked by Legalize 
       in memory.  Interrupt 12's return will not have been moved. 
       After the Legalize virus has become memory resident, it will 
       infect .COM and .EXE programs when they are executed or opened for 
       any reason.  Infected programs will have a file length increase of 
       1,781 bytes with the virus being located at the end of the infected 
       file.  The program's date and time in the DOS disk directory listing 
       will not be altered.  One text string can be found within the 
       viral code in all infected programs: 
       Systems infected with the Legalize virus may notice that some 
       infected programs will no longer function properly, giving 
       unexpected results. 
       See:  Gotcha 

Show viruses from discovered during that infect .

Main Page