My Child Virus
Virus Name: My Child
Aliases: My Child.A
V Status: New
Discovery: January, 1995
Symptoms: .COM & .EXE growth; file date/time seconds = "62";
decrease in available free memory (DOS 5.0)
Eff Length: 1,000 Bytes
Type Code: PRhAK - Parasitic Resident .COM & .EXE Infector
Detection Method: F-Prot, AVTK, IBMAV, ViruScan, Sweep, NAV,
NAVDX, VAlert, ChAV,
AVTK/N, IBMAV/N, NShld, Sweep/N, NProt, NAV/N, Innoc
Removal Instructions: Delete infected files
The My Child virus was received in January, 1995. Its origin or
point of isolation is unknown. My Child is a memory resident
fast infector of .COM and .EXE files, including COMMAND.COM. This
virus does not infect small .COM and .EXE files.
When the first My Child 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 CHKDSK program from
DOS 5.0, will have decreased by approximately 1,136 bytes.
Interrupt 21 will be hooked by the virus in memory.
Once the My Child virus is memory resident, it will infect .COM
and .EXE files, including COMMAND.COM, when they are executed or
opened, but not when copied. Infected files will have a file
length increase of 1,000 bytes with the virus being located at the
end of the file. The file's date and time in the DOS disk directory
listing will appear to be altered, though the seconds field will have
been set to "62". The following text strings are visible within
the viral code:
It is unknown what the My Child virus does besides replicate.
Known variant(s) of My Child are:
My Child.B: Received in July, 1995, My Child.B is a minor
variant of the My Child virus described above. The following
text strings are visible within the viral code:
Origin: Unknown July, 1995.