alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE DCRat Initial Checkin Server Response M5"; flow:established,from_server; http.stat_code; content:"200"; bsize:3; http.response_body; content:"|7b 22|ok|22 3a|true|2c 22|result|22 3a 7b 22|"; startswith; fast_pattern; content:"|22|is|5f|bot|22 3a|true|2c 22|first|5f|name|22 3a 22|DCRAT|20|BOT|22 2c 22|username|22 3a 22|dcra9bot|22|"; distance:40; within:60; reference:md5,0a0a64f3c4fa7d960be983aa0a7d0ce8; reference:url,github.com/eatinsundip/Suricata/tree/main/ET_Open_Submissions/2023/January/DCRat_Activity_01192023; classtype:trojan-activity; sid:2043417; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_01_20, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_01_20, reviewed_at 2024_01_26;)