alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Gamaredon APT Related Activity (GET)"; flow:established,to_server; urilen:>25; http.uri; content:".vp"; endswith; fast_pattern; http.user_agent; content:"|3b 20|ms-office|3b 20|"; http.header_names; content:!"Referer"; reference:url,github.com/stamparm/maltrail; classtype:trojan-activity; sid:2044522; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_03_07, deployment Perimeter, malware_family Gamaredon, performance_impact Moderate, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_08; target:src_ip;)