Virus Name: Kit
V Status: Rare
Discovered: April, 1992
Symptoms: .COM & .EXE growth; decrease in total system and available
Eff Length: 2,383 - 2,446 Bytes
Type Code: PRhAK - Parasitic Resident .COM & .EXE Infector
Detection Method: ViruScan, F-Prot, AVTK, Sweep, IBMAV,
NAV, NAVDX, VAlert, PCScan, ChAV,
NShld, LProt, Sweep/N, Innoc, NProt, AVTK/N,
Removal Instructions: Delete infected files
The Kit virus was received in April, 1992. Its origin is unknown.
It is a memory resident infector of .COM and .EXE programs,
The first time a Kit infected program is executed, the Kit 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 2,400 bytes. Interrupts 1C and 21 will be hooked.
Once the Kit virus is memory resident, it will infect .COM and
.EXE programs when they are executed. If COMMAND.COM is executed,
it will also become infected.
.COM programs infected with the Kit virus will have a file length
increase of 2,383 to 2,384 bytes on initial infection. Kit will
reinfect .COM files, adding an additional 2,384 bytes with each
reinfection. The virus will be located at the beginning of the
.EXE programs infected with the Kit virus will have a file length
increase of 2,416 to 2,446 bytes with the initial infection. As
with .COM files, Kit reinfects .EXE programs adding 2,416 bytes
with each reinfection. Kit will be located at the end of the
It does not alter the file's date and time in the DOS disk directory
listing. There are no text strings visible within the viral code
in infected programs.
It is unknown what Kit may do besides replicate.