alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE MalDoc Retrieving Payload May 23 2017 2"; flow:established,to_server; http.method; content:"GET"; http.uri; content:!"|2e|"; http.user_agent; content:"Mozilla/5.2 (Windows NT 6.2|3b 20|rv|3a|50.2) Gecko/20200103 Firefox/50.2"; fast_pattern; http.header_names; content:!"Referer|0d 0a|"; reference:md5,502cb33a03c29a96a4c32ec26dce5395; classtype:trojan-activity; sid:2024325; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_05_23, deployment Perimeter, malware_family Dridex, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2020_08_06;)