From the doc: 'SubFinder is a kind of sub7client but it is different from the client of sub7. The difference is due to the commands that you can send to sub7 server. In fact, Sub7Finder lets you send only commands related to remote scan feature. You can send both start scanning and stop scanning command. Of course, Sub7Finder lets you overcome server password request. Sub7Finder is not a simple client for sub7 server. When sub7 replies to the client and sends the ips found, client will try to connect to found ips and will try to crack the sub7server with the password entered.'
Backdoor Program [Panda]Backdoor.SubSeven.Finder [Kaspersky]Backdoor/SubSeven.Finder [Computer Associates]Backdoor-Sub7 [McAfee]packed: UPX [Kaspersky]security risk or a "backdoor" program [F-Prot]
sub7finder.exe