alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Gamaredon APT Related Activity (GET)"; flow:established,to_server; urilen:>10; http.method; content:"GET"; http.uri; content:".ma"; fast_pattern; endswith; http.user_agent; content:"|3b 20|ms-office|3b 20|"; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:url,twitter.com/Cyber0verload/status/1630548770675998721; reference:md5,f0982247a02f035c2683c2fdf2876dff; classtype:trojan-activity; sid:2044386; rev:3; metadata:attack_target Client_Endpoint, created_at 2023_02_28, deployment Perimeter, malware_family Gamaredon, performance_impact Significant, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_30; target:src_ip;)