alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED TA406 Win32/Updog CnC Checkin"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/dn.php?name|3d|"; startswith; fast_pattern; content:"&prefix|3d|"; distance:0; within:50; pcre:"/^(cc|tt)/R"; reference:url,www.fortinet.com/blog/threat-research/konni-campaign-distributed-via-malicious-document; classtype:trojan-activity; sid:2049307; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_and_Server, created_at 2023_11_27, deployment Perimeter, former_category MALWARE, malware_family Win32_Updog, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_10_03, reviewed_at 2024_10_03; target:src_ip;)