It is a dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the end of .COM and .EXE files (except COMMAND.COM) that are executed or opened. On 97th infection the virus also hooks INT 13h and swaps disk access: from disk A: to disk B: and from B: to A:. With probability 0.04% depending on its internal counter the virus also redirects all hard drive access calls to A: drive.
The virus contains the text strings:
COMEXE
This program is dedicated to my girlfriend Gabriela,
who hates computers. SWITCH v 1.3 (C) by Windom Earle
