alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE MSIL/Agent.TRM Task Command"; flow:established,to_client; http.stat_code; content:"200"; file_data; content:"|7b 22|YSC|22 3a 22|"; startswith; fast_pattern; content:"|22 2c 22|command|22 3a 22|"; within:20; reference:md5,d2b81c4f5d075daa681f823cc9a5e4c0; classtype:command-and-control; sid:2029854; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_04_09, deployment Perimeter, deployment SSLDecrypt, malware_family MSIL_Agent_TRM, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_09;)