alert http $HOME_NET any -> $EXTERNAL_NET !80 (msg:"ET MALWARE Possible Sakura Jar Download Oct 22 2013"; flow:established,to_server; http.uri; content:!".jar"; pcre:"/^\/[a-z]+(?:[_-][a-z]+)*\.[a-z]{1,3}$/"; http.host; content:".pl"; endswith; pcre:"/^[a-z0-9]+\.[a-z0-9]+\.[a-z0-9]+\.pl$/"; http.user_agent; content:"Java/1."; fast_pattern; classtype:trojan-activity; sid:2017628; rev:5; metadata:created_at 2013_10_23, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_20;)