A new Tor-based malware, named ChewBacca, has been identified as Trojan.Win32.Fsysna.fej Adding Tor to malware is not unique to this sample, but it-s still a rare feature. The malware is a PE32 executable compiled with Free Pascal 2.7.1 (the version dated 22.10.2013) The malware also contains an uninstall function named P$CHEWBACCA$_$TMYAPPLICATION_$__$$_DESTROY”]
Source: https://securelist.com/chewbacca-a-new-episode-of-tor-based-malware/58192/