alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Kimsuky KGH Malware Suite Checkin M1"; flow:established,to_server; http.method; content:"POST"; http.request_body; content:"|0d 0a 0d 0a 0d 0a 2f 2f 2f 2f 2f 2f 2f|"; content:"System Infomation"; within:30; content:"|0d 0a 0d 0a|Boot Device|3a 20 5c|"; fast_pattern; content:"|0d 0a|Build Number|3a 20|"; distance:0; reference:url,www.cybereason.com/blog/back-to-the-future-inside-the-kimsuky-kgh-spyware-suite; classtype:targeted-activity; sid:2031168; rev:1; 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, performance_impact Low, confidence High, signature_severity Major, tag Kimsuky, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_03;)