It is a harmless memory resident multipartite virus. When an infected file is executed, it hooks INT 21h, infects the MBR of the hard drive and stays memory resident. When the system is loading from infected MBR, the virus hooks INT 1Ch, waits for DOS loading procedure and then hooks INT 21h.
When a .COM or .EXE file is executed, the virus writes itself to the end of the file. When the DOS command GetDiskSpace is executed, the virus searches for executable files and infects them.
The virus does not manifest itself in any way.
