alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Gamaredon APT Maldoc Retrieving Remote Template (GET)"; flow:established,to_server; urilen:>30; http.method; content:"GET"; http.uri; content:".kdc"; endswith; fast_pattern; http.user_agent; content:"|3b 20|ms-office|3b 20|"; http.header_names; content:!"Referer|0d 0a|"; reference:md5,85225645f8d01ccb48636eef96a6d039; reference:url,twitter.com/Cyber0verload/status/1646200848333127708; reference:url,twitter.com/500mk500/status/1646203413900804113; classtype:trojan-activity; sid:2044962; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_04_17, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_17; target:src_ip;)