alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Gamaredon Related Maldoc Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/nevertheless/"; startswith; fast_pattern; content:".dot"; endswith; http.user_agent; content:"|3b 20|ms-office|3b 20|"; http.header_names; content:!"Referer"; reference:md5,11550f9b4e5891951152c2060bc94f95; classtype:trojan-activity; sid:2038813; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_12_01, deployment Perimeter, malware_family Gamaredon, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_09_13;)