alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Kimsuky KGH Backdoor CnC Activity"; flow:established,to_server; http.uri; content:"?id="; content:"&act="; content:"&ver=x"; distance:3; within:6; fast_pattern; pcre:"/^(?:64|86)$/R"; reference:url,www.cybereason.com/blog/back-to-the-future-inside-the-kimsuky-kgh-spyware-suite; classtype:targeted-activity; sid:2031172; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_11_03, deployment Perimeter, malware_family KGH_Malware_Suite, confidence High, signature_severity Major, tag Kimsuky, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_03;)