alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE Gamaredon APT Related Activity (GET)";
flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:".html=?"; fast_pattern;
http.user_agent;
content:"mozilla/";
content:"|3b 3b|"; distance:0;
content:"|3b 3b 2f 2e|"; distance:0;
content:"|2e|"; endswith;
reference:url,twitter.com/Cyber0verload/status/1628673516177596417;
reference:md5,3ec473c51154d725b75a6b22d8469ede;
classtype:trojan-activity;
sid:2044353; rev:2;
metadata:attack_target Client_Endpoint, created_at 2023_02_27, deployment Perimeter, malware_family Gamaredon, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_18, reviewed_at 2023_12_26;
target:src_ip;
)