alert tcp-pkt $EXTERNAL_NET any -> $HOME_NET any (
msg:"ET MALWARE Win32/AdAptertrAin CnC Server Response";
flow:established,to_client;
content:"|23 23 23 25|k|23 23 23|"; offset:7; depth:8; fast_pattern;
pcre:"/\x20(?:[0-9]{1,3}\.){3}[0-9]{1,3}/";
content:"|23 23 23 25|k|23 23 23|"; within:8;
reference:md5,204f66cb1239e818b3da66467fb8c56e;
reference:url,twitter.com/naumovax/status/1747985922098966617;
classtype:trojan-activity;
sid:2050229; rev:1;
metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2024_01_18, deployment Perimeter, malware_family Win32_AdAptertrAin, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_01_18;
)