alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET CURRENT_EVENTS Possible WhiteLotus Java Payload"; flow:established,to_server; http.uri; content:"/?"; startswith; pcre:"/^\/\?[A-Za-z0-9]+=(?P<v1>[^&]+)&(?P=v1)=[^\/\.]+$/"; http.user_agent; content:"Java/1."; fast_pattern; classtype:trojan-activity; sid:2017739; rev:5; metadata:created_at 2013_11_21, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_18;)