alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Bitter APT Payload Request"; flow:established,to_server; http.uri; content:"/extr/wave.php?st="; startswith; content:"|2a|"; distance:0; http.user_agent; content:"Windows Installer"; bsize:17; reference:md5,38bbbff31982b1e395b3437134c7cf69; reference:url,twitter.com/RedDrip7/status/1536989979229835265; classtype:trojan-activity; sid:2037809; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2022_07_22, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2022_07_22;)