alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Aria2 User-Agent"; flow:to_server,established; http.user_agent; content:"aria2/"; depth:6; fast_pattern; reference:url,github.com/aria2/aria2; reference:md5,eb042fe28b8a235286df2c7f4ed1d8a8; classtype:trojan-activity; sid:2027286; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_04_25, deployment Perimeter, confidence High, signature_severity Minor, updated_at 2020_08_28;)