alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT Turla/SPL EK Java Applet"; flow:established,from_server; file_data; content:"/x-java-applet"; fast_pattern:only; content:"spl"; nocase; pcre:"/^[\x22\x27]/R"; content:"<object"; nocase; pcre:"/^(?=(?:(?!<\/object>).)+?codebase\s*?=\s*?[\x22\x27]spl[\x22\x27])(?=(?:(?!<\/object>).)+?\/x-java-applet)/Rsi"; reference:url,securelist.com/analysis/publications/65545/the-epic-turla-operation/; classtype:targeted-activity; sid:2018922; rev:2; metadata:created_at 2014_08_12, confidence High, signature_severity Major, updated_at 2019_07_26;)