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;)