Virus Name: Elaine
V Status: New
Discovered: January, 1996
Symptoms: .COM & .EXE growth; decrease in available free memory;
file date/time seconds = 62
Eff Length: 1,127 - 1,141 Bytes
Type Code: PRhA - Parasitic Resident .COM & .EXE Infector
Detection Method: NAV, NAVDX, ViruScan, IBMAV, AVTK, PCScan, F-Prot,
AVTK/N, NAV/N, NShld, IBMAV/N, LProt, Innoc 4.0+
Removal Instructions: Delete infected files
The Elaine virus was received in January, 1996. Its origin or
point of isolation is unknown. Elaine is a memory resident
infector of .COM and .EXE files, but not COMMAND.COM.
When the first Elaine 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 1,456 bytes. Interrupts 13 and 21 will be
hooked by the virus in memory.
Once the Elaine virus is memory resident, it will infect .COM and
.EXE files, but not COMMAND.COM, when they are executed. Infected
.COM files will have a file length increase of 1,127 bytes while
.EXE files will increase in size by 1,127 to 1,141 bytes. In both
cases, the virus will be located at the end of the file. The
program's date and time in the DOS disk directory listing will not
appear to be altered, though the seconds field will have been set to
"62". The following text strings are visible within the viral code
in all infected files:
"Elaine 1.0 28 May 1994"
It is unknown what the Elaine virus may do besides replicate.