alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED [ANY.RUN] Echida Botnet Check-In M2"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/command_bot.php?hwid="; fast_pattern; pcre:"/^[A-F0-9]{32}/R"; http.accept; content:"application/x-www-form-urlencoded"; http.content_type; content:"application/x-www-form-urlencoded"; http.header_names; content:!"Referer|0d 0a|"; content:!"User-Agent|0d 0a|"; reference:md5,68e3359674ee7d49550b09e7ff69dcce; reference:url,twitter.com/ViriBack/status/1698693553168236869; classtype:command-and-control; sid:2047922; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2023_09_05, deployment Perimeter, former_category MALWARE, malware_family echida_botnet, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_10_02, reviewed_at 2024_10_02; target:src_ip;)