alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Gamaredon Maldoc Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/sell/"; startswith; fast_pattern; content:".dot"; endswith; http.user_agent; content:"|3b 20|ms-office|3b 20|"; reference:md5,fbc037e68f5988df9190cdadf7424752; reference:url,twitter.com/NinjaOperator/status/1354526362627936258; classtype:trojan-activity; sid:2033723; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_08_13, deployment Perimeter, malware_family Gamaredon, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_08_13;)