alert tcp-pkt $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Amarula IRC Botnet Connection Request"; flow:established,to_server; content:"|55 53 45 52 20|"; startswith; content:"|20 3a 5a 75 4d 62 49 0a|"; endswith; fast_pattern; reference:md5,603841f6a7036311fa5bbc44d7435f83; reference:url,github.com/hackerama/Amarula-Python-Botnet/; classtype:command-and-control; sid:2031117; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_10_26, deployment Perimeter, confidence Medium, signature_severity Major, updated_at 2020_10_26;)