alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Likely Arid Viper APT Advtravel Campaign GET Keepalive"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/index.php/customer/onlin"; fast_pattern; http.user_agent; bsize:17; content:"Internet Explorer"; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:url,www.trendmicro.com/cloud-content/us/pdfs/security-intelligence/white-papers/wp-operation-arid-viper.pdf; classtype:targeted-activity; sid:2020432; rev:10; metadata:created_at 2015_02_17, confidence Medium, signature_severity Major, updated_at 2024_04_30;)