Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Meimaii Checkin"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/meimaii/meimaii.html?user="; startswith; fast_pattern; content:"&computer="; distance:0; http.header_names; content:"|0d 0a|Host|0d 0a|Accept|0d 0a 0d 0a|"; startswith; reference:md5,4f8148aa011570d9fc0541ea325e6139; classtype:trojan-activity; sid:2038666; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_08_29, deployment Perimeter, malware_family Win32_Meimaii, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_29, reviewed_at 2024_12_24;)