alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Gamaredon APT Related Maldoc Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri.raw; content:"/%D0"; startswith; content:"-%D0%9F"; distance:0; fast_pattern; content:".dot"; endswith; http.user_agent; content:"|3b 20|ms-office|3b 20|"; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:md5,91c27abec8fda1410e2fae396f592e93; reference:md5,8d1ce6280d2f66ff3e4fe1644bf24247; reference:url,twitter.com/500mk500/status/1502545185510731777; classtype:trojan-activity; sid:2035450; rev:3; metadata:attack_target Client_Endpoint, created_at 2022_03_14, deployment Perimeter, malware_family Gamaredon, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_05_04;)