alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET RETIRED APT37 M2RAT CnC Server Command - CMD"; flow:established,to_client; http.stat_code; content:"200"; http.content_len; byte_test:0,=,3,0,string,dec; file.data; content:"CMD"; depth:3; fast_pattern; reference:url,asec.ahnlab.com/ko/47622/; classtype:trojan-activity; sid:2044241; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_02_17, deployment SSLDecrypt, former_category MALWARE, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_30, reviewed_at 2024_09_30;)