alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE LokiBot Screenshot Exfiltration Detected"; flow:established,to_server; http.method; content:"POST"; http.user_agent; content:"(Charon|3b 20|Inferno)"; http.request_body; content:"|00 2c 00|"; offset:1; depth:3; pcre:"/^[\x00-\x01]\x00.\x00{3}/R"; classtype:trojan-activity; sid:2024316; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_05_17, deployment Perimeter, malware_family lokibot, confidence High, signature_severity Major, updated_at 2020_08_25;)