This is a virus detection. Viruses are programs that self-replicate recursively, meaning that infected systems spread the virus to other systems, which then propagate the virus further. While many viruses contain a destructive payload, it's quite common for viruses to do nothing more than spread from one system to another.
Indication of Infection
The Dark Avenger virus contains the text strings:
"The Dark Avenger, copyright 1988, 1989"
"This file was written in the city of Sofia. Eddie lives.... Somewhere in Time!".
Infected files have a file length increase of 1,800 bytes.
The Dark Avenger virus is destructive. The virus maintains a counter in the disk's boot sector. After each sixteenth file is infected, the virus randomly overwrites a sector on the disk with a portion of the Dark Avenger viral code. If the randomly selected sector is a portion of a file or data file, the file or data file is corrupted. Files and data files which have been corrupted by a sector being overwritten are permanently damaged and cannot be repaired since the original sector is lost.
Methods of Infection
The only way to infect a computer with a file infecting virus is to execute an infected file on the computer. The infected file may come from a multitude of sources including: floppy diskettes, downloads through an online service, network, etc. Once the infected file is executed, the virus may activate.
Amilia, Black Avenger, Boroda, Dark Quest, Diana, Eddie, Evil Men, PS!KO, Rabid Avenger, VANSoft