alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE [ANY.RUN] Konni.APT Keep-Alive"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/list.php?f="; startswith; fast_pattern; content:"&r="; http.user_agent; content:"WindowsPowerShell/"; http.header_names; content:!"Referer"; threshold:type limit,track by_dst,seconds 1300,count 1; reference:md5,cc4aeb24de3cf447f4902de124f61a59; reference:url,app.any.run/tasks/94d2285e-c039-4ae1-8fcb-debd62fdc096; reference:url,community.emergingthreats.net/t/konni-apt/765; classtype:trojan-activity; sid:2046821; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_07_14, deployment Perimeter, confidence High, signature_severity Critical, tag Konni, updated_at 2023_09_01;)