Trojans are malicious applications that pose themselves as legitimate software in order to trick users to install them. Once on the victim's machine, it may run any number of malicious process to steal vital information or inflict damage to other software.
NetSniff is a spyware trojan which uses legitimate library files of Winpcap to monitor network traffic in an infected computer.
Can performs network scanning operations.
Block access to certain sites by altering Windows Hosts File.
Variants of this trojan hides its files from Windows API.