alert http $HTTP_SERVERS any -> $EXTERNAL_NET any (msg:"ET MALWARE ELF/Muhstik Bot Reporting Vulnerable Server to CnC"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/pma.php?ip="; depth:12; fast_pattern; pcre:"/^(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])$/R"; reference:url,www.intezer.com/muhstik-botnet-reloaded-new-variants-targeting-phpmyadmin-servers/; classtype:command-and-control; sid:2026607; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Linux, attack_target Client_Endpoint, created_at 2018_11_14, deployment Perimeter, malware_family Muhstik, performance_impact Low, confidence High, signature_severity Major, tag DDoS, updated_at 2020_08_27;)