alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Filecoder.NZK Variant"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".php?info=ID:__"; content:"__Key1:__"; distance:0; content:"__Key2:__"; distance:0; reference:md5,c7bbff934bd89ad39e98e2746c6e8af2; reference:url,twitter.com/GrujaRS/status/1214680560834162690; classtype:command-and-control; sid:2029240; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_01_08, deployment Perimeter, malware_family Win32_Filecoder_NZK, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_01_08;)