Virus Name: Satana
V Status: New
Discovery: January, 1996
Symptoms: .COM & .EXE growth; file date/time seconds = "62";
decrease in available free memory
Eff Length: 665 Bytes
Type Code: PRhAK - Parasitic Resident .COM & .EXE Infector
Detection Method: ChAV, F-Prot, IBMAV, AVTK, ViruScan, NAV, NAVDX,
Innoc, IBMAV/N, AVTK/N, NShld, NAV/N
Removal Instructions: Delete infected files
The Satana or Satana.665 virus was received in January, 1996. Its
origin or point of isolation is unknown. Satana is a memory
resident fast infector of .COM and .EXE files, including COMMAND.COM.
When the first Satana 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 688 bytes. Interrupt 21 will be
hooked by the virus in memory.
Once the Satana virus is memory resident, it will infect .COM and
.EXE files when they are executed or opened, but not when copied.
Infected files will have a file length increase of 665 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 not appear to be
altered, though the seconds field will have been set to "62". The
following text string is visible within the viral code:
"SATANA 666 (C) EA inc."