Basically Binders are the software applications that help a hacker or virus creator to spread a virus or malicious file by binding it with a genuine file and giving it to the user for use
When the user starts the required application,the vrius which is hidden/attached in that file will automatically get executed and infect the victim’s PC.
Here are some binders available for binding the file
File Joiner
Windows IExpress
CYBERDEMONZS 