alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED Possible Malicious Macro DL BIN March 2017"; flow:established,to_server; content:"GET"; http_method; content:"?showforum="; http_uri; fast_pattern:only; pcre:"/\?showforum=$/Ui"; content:!".php"; http_uri; content:!"Referer|3a 20|"; http_header; content:!"User-Agent|3a 20|"; http_header; reference:md5,ad575f6795526f2ee5e730f76a3b5346; classtype:trojan-activity; sid:2024109; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_03_29, deployment Perimeter, performance_impact Moderate, signature_severity Major, updated_at 2019_07_26;)