alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE X2000M.Agent Checkin Jan 24 2017"; flow:established,to_server; http.user_agent; content:"v7v7v7v7v7v7v7v7v7v7v7v7"; startswith; reference:md5,4c3b84efe89e5f5cf3e17f1e1751e708; classtype:command-and-control; sid:2023764; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_01_25, deployment Perimeter, confidence High, signature_severity Major, updated_at 2020_02_14;)