Ienez Virus

 Virus Name:  Ienez 
 Aliases:     Ienez.1428 
 V Status:    New 
 Discovered:  January, 1995 
 Symptoms:    .EXE file growth; decrease in available free memory; 
              DOS CHKDSK file allocation errors; 
              file date/time seconds = "62" 
 Origin:      Unknown 
 Eff Length:  1,428 - 1,442 Bytes 
 Type Code:   PRhE - Parasitic Resident .EXE Infector 
 Detection Method:  F-Prot, IBMAV, AVTK, Sweep, ViruScan, NAVDX, 
                    VAlert, NAV, PCScan, ChAV, 
                    IBMAV/N, AVTK/N, Sweep/N, NShld, NAV/N, Innoc 4.0+ 
 Removal Instructions:  Delete infected files 
 General Comments: 
       The Ienez virus was received in January, 1995.  Its origin or point 
       of isolation is unknown.  Ienez is a memory resident infector of 
       .EXE files. 
       When the first Ienez 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.  Available 
       free memory, as indicated by the DOS 5.0 CHKDSK program, will have 
       decreased by approximately 1,440 bytes.  Interrupts 17 and 21 will 
       be hooked by the virus in memory. 
       Once the Ienez virus is memory resident, it will infect .EXE files 
       when they are executed or opened, but not on copy.  Programs 
       infected by the Ienez virus will have a file length increase of 
       1,428 to 1,442 bytes, though 1,428 bytes of this file length increase 
       will be hidden by the virus when it is memory resident.  The file's 
       date and time in the DOS disk directory listing will not be altered. 
       The virus will be located at the end of infected files.  The following 
       text strings are encrypted within the Ienez viral code: 
               "IENEZ II 29-9-93 VETO !!!" 
               "IENEZ II (c) DEATHMAN 1993" 
       The DOS CHKDSK program will indicate file allocation errors on 
       Ienez infected programs, except those which increased in size by 
       1,428 bytes. 
       It is unknown what the Ienez virus does besides replicate. 

Show viruses from discovered during that infect .

Main Page