alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Hoic.zip retrieval"; flow:from_server,established; file_data; content:"Hoic/buttons2/PK"; content:"Hoic/buttons2/buttons.rar"; distance:0; reference:url,blog.spiderlabs.com/2012/01/hoic-ddos-analysis-and-detection.html; classtype:trojan-activity; sid:2018976; rev:3; metadata:created_at 2014_08_21, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)