alert tcp $EXTERNAL_NET 443 -> $HOME_NET any (msg:"ET MALWARE Upatre Compromised Site hot-buys"; flow:established,to_client; content:"|55 04 03|"; content:"|0c|hot-buys.org"; distance:1; within:14; nocase; reference:md5,bad758023d2e3cc17b61423720cdb5b7; classtype:trojan-activity; sid:2018506; rev:1; metadata:created_at 2014_05_29, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)