Doubleheart Virus
Virus Name: Doubleheart
Aliases: Doubleheart.452
V Status: New
Discovered: July, 1994
Symptoms: .EXE file growth; file date/time changes;
unexpected access to disk drives
Origin: Unknown
Eff Length: 452 - 466 Bytes
Type Code: PNE - Parasitic Non-Resident .EXE Infector
Detection Method: F-Prot, AVTK, IBMAV, ViruScan, Sweep, NAV,
NAVDX, VAlert, PCScan,
AVTK/N, IBMAV/N, NShld, Sweep/N, NProt, NAV/N
Removal Instructions: Delete infected files
General Comments:
The Doubleheart virus was received in July, 1994. Its origin or point
of isolation is unknown. Doubleheart is a non-resident, direct action
infector of .EXE programs.
When a Doubleheart infected program is executed, the Doubleheart virus
will infect up to three .EXE files in the current drive current
directory, as well as one .EXE located in the C: drive root directory,
and attempt to infect one file located on the B: drive. Files
infected with the Doubleheart virus will have a file length increase
of 452 to 466 bytes with the virus being located at the end of the
file. The program's date and time in the DOS disk directory listing
will have been updated to the current system date and time when
infection occurred. One text string is visible within the viral code
in all Doubleheart infected programs:
"*.exe"
It is unknown what Doubleheart may do besides replicate.
Known variant(s) of Doubleheart are:
Doubleheart.452.B: Also received in July, 1994, Doubleheart.452.B
is a minor variant of the Doubleheart virus described
above. Characters from memory and system hangs may occur
when infected programs are executed.
Origin: Unknown July, 1994.
Doubleheart.649: Received in July, 1994, Doubleheart.649 is a
.COM file infecting variant of the Doubleheart virus
described above. It infects up to three .COM files in the
current directory, as well as attempting to infect one file
on the B: and C: drives, when an infected program is
executed. Programs infected with Doubleheart.649 will have
a file length increase of 649 to 660 bytes with the virus
being located at the end of the file. The program's date
and time in the DOS disk directory listing will have been
updated to the current system date and time when infection
occurred. The following text strings are encrypted within
the viral code:
"*.com"
".COM M M IBMBIO.COMIBMDOS.COM"
"From Russia with love!"
Origin: Unknown July, 1994.