alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Kimsuky KGH Backdoor CnC Activity M2"; flow:established,to_server; http.uri; content:".php?wShell="; fast_pattern; pcre:"/^\d+$/R"; http.user_agent; content:"|3b 20 2e|NET CLR 3.5.30729|3b 20|InfoPath.2)"; endswith; reference:url,www.cybereason.com/blog/back-to-the-future-inside-the-kimsuky-kgh-spyware-suite; classtype:targeted-activity; sid:2031179; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_11_04, deployment Perimeter, malware_family KGH_Malware_Suite, confidence High, signature_severity Major, tag Kimsuky, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_04;)