alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/Trojan-Gypikon Sending Data"; flow:established,to_server; content:"@"; pcre:"/^(?:x(?:86|64)@)?\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/R"; content:" OS|3a 20|Win"; within:8; content:" CPU|3a|"; distance:0; content:"Hz|2c|RAM|3a|"; distance:0; reference:md5,f27bf471d2f2c0a76331d25fc4761e10; reference:md5,792b725b6a2a52e4eecde846b39eea7d; classtype:trojan-activity; sid:2018129; rev:4; metadata:created_at 2014_02_13, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)