Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED ZuoRAT send_http_msg_php Call to dns.php"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/dns.php"; startswith; content:"o_addr="; fast_pattern; content:"ip_addr="; content:"dns="; http.header; content:"Cache-Control|3a 20|max-age=0"; content:"Upgrade-Insecure-Requests|3a 20|1"; reference:url,github.com/blacklotuslabs/IOCs/blob/main/ZuoRAT_IoCs.txt; classtype:targeted-activity; sid:2037140; rev:3; metadata:attack_target Client_and_Server, created_at 2022_06_28, deployment Perimeter, deployment SSLDecrypt, former_category MALWARE, malware_family ZuoRAT, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_17, reviewed_at 2024_09_17;)