alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Inido!rts Checkin"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/Client/ClicentMessage.ashx?rnd="; startswith; fast_pattern; content:"&v="; distance:0; content:"&mac="; distance:0; content:"&LoginName="; distance:0; http.user_agent; content:"Mozilla|2f|3|2e|0|20 28|compatible|3b 20|Indy|20|Library|29|"; bsize:38; threshold:type limit, track by_src, seconds 180, count 1; reference:md5,735e730c26f59d26fc5ff22107817de1; classtype:trojan-activity; sid:2044790; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_03_27, deployment Perimeter, malware_family Win32_Inido_rts, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_27, reviewed_at 2024_12_11;)