alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Qtloader encrypted check-in Oct 19 M1"; flow:established,to_server; http.request_body; content:"|2c 45 32 4d f1 38 55|"; depth:7; fast_pattern; reference:md5,4f03e360be488a3811d40c113292bc01; classtype:trojan-activity; sid:2024908; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_10_24, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_24;)