alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Spy.Agent.QAQ Variant CnC Activity"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/gate.php"; endswith; fast_pattern; http.content_len; byte_test:0,=,95,0,string,dec; http.header_names; to_lowercase; content:!"|0d 0a|user-agent|0d 0a|"; content:!"|0d 0a|accept"; content:!"|0d 0a|pragma|0d 0a|"; content:!"|0d 0a|referer|0d 0a|"; reference:md5,a3c4951687b39e58550309dbbf2e5c85; reference:md5,1c1d7bf3ad926f3cdf0befbc5205a1fe; classtype:trojan-activity; sid:2031233; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_11_24, deployment Perimeter, malware_family Win32_Spy_Agent_QAQ, confidence High, signature_severity Major, updated_at 2024_04_22;)