alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE TA399/SideWinder antibot script"; flow:established,to_client; http.stat_code; content:"200"; http.response_body; content:"const encriptedData|20 3d 20|encode|28|finalData, secretKey|29 3b|"; content:"Body|3a 20|encriptedData"; distance:0; fast_pattern; reference:url,blog.group-ib.com/sidewinder-antibot; classtype:targeted-activity; sid:2036786; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_06_02, deployment Perimeter, deployment SSLDecrypt, malware_family Sidewinder, performance_impact Low, confidence High, signature_severity Major, tag TA399, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_06_02;)