Virus Name: Do-Nothing
Aliases: The Stupid Virus, Nothing
V Status: Extinct
Discovered: October, 1989
Symptoms: .COM file growth; TSR (see text)
Eff Length: 608 Bytes
Type Code: PRfC - Parasitic Resident .COM Infector
Detection Method: ViruScan, F-Prot, AVTK, NAV, Sweep,
IBMAV, NAVDX, VAlert, PCScan, ChAV,
NShld, LProt, Sweep/N, Innoc, NProt, AVTK/N,
Removal Instructions: F-Prot, NAV, or delete infected files
This virus was first reported by Yuval Tal of Israel in October,
1989. The virus will infect .COM files, but only the first one in
the current directory, whether it was previously infected or not.
The Do-Nothing virus is also memory resident, always installing
itself to memory address 9800:100h, and can only infect systems with
640K of memory. The virus does not protect this area of memory in
any way, and other programs which use this area will overwrite it in
memory, removing the virus from memory.
The Do-Nothing virus does no apparent damage, nor does it affect
operation of the system in any observable way, thus its name.