Rule History

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; content:".udb"; endswith; fast_pattern; http.user_agent; content:"|3b 20|ms-office|3b 20|"; http.header_names; content:!"Referer"; reference:url,twitter.com/InQuest/status/1541776073742028802; reference:md5,71ba796a0946dacc5af63d36f89673e6; classtype:trojan-activity; sid:2037136; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_06_28, deployment Perimeter, malware_family Gamaredon, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_06_28;)