Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Shrine.A CnC Checkin"; flow:established,to_server; http.request_line; content:"POST|20|/info|20|"; http.request_body; content:"data|3d 7b 22|Hostname|22 3a 22|"; startswith; fast_pattern; content:"|22 2c 22|Username|22 3a 22|"; distance:0; content:"|22 2c 22|Platform|22 3a 22|"; distance:0; content:"|22 2c 22|Process|22 3a 22|"; distance:0; http.user_agent; content:"Go-http-client"; startswith; http.header_names; content:!"|0d 0a|Referer|0d 0a|"; reference:md5,34aafe6b66e38e9582cafba003a25e97; classtype:trojan-activity; sid:2037806; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_07_21, deployment Perimeter, malware_family Win32_Shrine_A, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_07_21, reviewed_at 2025_01_06;)