alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Moose CnC Request M1"; flow:to_server,established; urilen:1; content:"PP|3b 20|nhash="; fast_pattern; http.method; content:"GET"; http.cookie; content:"PHPSESSID="; content:"AAAAAAAAAAAAAAA"; distance:0; content:"PP|3b 20|nhash="; distance:0; content:"|3b 20|chash="; distance:0; http.header_names; content:!"Referer|0d 0a|"; reference:url,gosecure.net/2016/11/02/exposing-the-ego-market-the-cybercrime-performed-by-the-linux-moose-botnet/; classtype:command-and-control; sid:2023477; rev:4; metadata:affected_product Linux, attack_target Client_and_Server, created_at 2016_11_02, deployment Perimeter, malware_family Linux_Moose, performance_impact Low, signature_severity Major, updated_at 2020_10_07;)