Virus Name: Marbas
V Status: New
Discovered: January, 1996
Symptoms: .COM file growth; file date/time changes
Eff Length: 1,303 Bytes
Type Code: PNCK - Parasitic Non-Resident .COM Infector
Detection Method: NAV, NAVDX, IBMAV, AVTK, ViruScan, F-Prot, PCScan, ChAV,
NAV/N, IBMAV/N, NProt, AVTK/N, NShld, NProt, Innoc
Removal Instructions: Delete infected files
The Marbas or Marbas.1303 virus was received in January, 1996. Its
origin or point of isolation is unknown. Marbas is a non-resident,
direct action infector of .COM files, including COMMAND.COM.
When a program infected with the Marbas virus is executed, this
virus will infect all of the .COM files located in the current
directory. Infected programs will have a file length increase of
1,303 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
Marbas viral code:
"*.com *.* .."
"[ Pride ][ Avarice ][ Lechery ][ Anger ][ Gluttony ][ Envey ][
"[So on his nightmare, through the evening fog, Flits the squat
fiend o'er fen, lake, and bog; Seeks some love-wildered maid
with sleep oppressed, Alights, and grinning sits upon her
breast... Back o'er her pillow sinks her blushing head, Her
snow-white limbs hang helpless from the bed; While with quick
sighs and suffocative breath Her interrupted heart pulse swims
Known variant(s) of Marbas are:
Marbas.1313: Also received in January, 1996, this is a 1,313
byte variant of the Marbas virus described above. It infects
all of the .COM files in the current directory when an infected
program is executed, adding 1,313 bytes to the file's length.
The viral code will be located at the end of the file and 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. This variant contains the same encrypted
text strings as the original virus.
Origin: Unknown January, 1996.