I can asure you, it's not a trojan, nor does the version from Buffy contain any type of malware like keyloggers, droppers or alike.
Although it DOES share a few behaviors with actual malware, the most problematic one would be the Heartbeat.exe which connects to Buffys server every 15 seconds (which is hardly reasonable, and you know that, Buffy!) which is interpreted as communication with a control server. This unnecessary and suspicious communication led to the wrong assumption that the hack contained malware.
Btw.: Kaspersky is not the only scanner which classifies the heartbeat.exe as malware.