HAMACHI
Hamachi is a VPN service provided by LogMeIn. This signature classifies traffic to the LogMeIn servers used by Hamachi. The P2P VPN streams between users are using IPSEC, and won't be classified as hamachi, but ipsec instead.
Available to all SRX running 12.3X48+
Available to all MX running 20.2R1+
Available to all vSRX running 20.3R1+