alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Gamaredon APT Related Activity (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/junk.flv?"; startswith; fast_pattern; http.user_agent; content:"junk/"; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:md5,61c4a0ab7b156744fcc24fb0813fb9b3; reference:url,github.com/stamparm/maltrail/blob/master/trails/static/malware/apt_gamaredon.txt; classtype:trojan-activity; sid:2035289; rev:2; metadata:attack_target Client_Endpoint, created_at 2022_02_25, deployment Perimeter, malware_family Gamaredon, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_25, reviewed_at 2023_08_25;)