alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/TrojanDropper.Agent.SSQ Checkin"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"|2f|stanvac|2f|Cadastro2|2e|php|3f|pc|3d|"; startswith; fast_pattern; content:"|26|serial|3d|"; distance:0; http.user_agent; content:"Mozilla|2f|3|2e|0|20 28|compatible|3b 20|Indy|20|Library|29|"; http.header_names; content:"|0d 0a|Host|0d 0a|Accept|0d 0a|Accept-Encoding|0d 0a|User-Agent|0d 0a 0d 0a|"; startswith; reference:md5,9e58c3475d65fa2eda9b983415a46f0e; classtype:trojan-activity; sid:2039418; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_10_14, deployment Perimeter, malware_family Win32_TrojanDropper_Agent_SSQ, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_10_14, reviewed_at 2024_12_24;)