symantec antivirus treats my statadlone web application as virus

We have a standalone web application, in which for every URL request ( which calls CGI binary through system command), a new process is created. With this our application is working fine in normal environment. But in some systems where Symantec,F-secure, Avaita anti-virus program were running there our application is extremely slow and

Symantec antivirus program is killing it thinking as if it is a virus.

Can you please help what are the situations that makes my web application to be treated as VIRUS.