alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING Double Base64 Encoded ipconfig sent via HTTP URI M9"; flow:established,to_server; http.uri; content:"YYVc1a2IzZHpJRWxRSUVOdmJtWnBaM1Z5WVhScGIy"; fast_pattern; pcre:"/(?:R(?:Mjl1Ym1WamRHbHZiaTF6Y0dWamFXWnBZeUJFVGxNZ1UzVm1abWw0|GIyNXVaV04wYVc5dUxYTndaV05wWm1saklFUk9VeUJUZFdabWFY|iMjV1WldOMGFXOXVMWE53WldOcFptbGpJRVJPVXlCVGRXWm1hW)|E(?:yOXVibVZqZEdsdmJpMXpjR1ZqYVdacFl5QkVUbE1nVTNWbVptbD|YjI1dVpXTjBhVzl1TFhOd1pXTnBabWxqSUVST1V5QlRkV1ptYV)|UTI5dWJtVmpkR2x2YmkxemNHVmphV1pwWXlCRVRsTWdVM1ZtWm1sN|TnZibTVsWTNScGIyNHRjM0JsWTJsbWFXTWdSRTVUSUZOMVptWnBl|52Ym01bFkzUnBiMjR0YzNCbFkybG1hV01nUkU1VElGTjFabVpwZ|OdmJtNWxZM1JwYjI0dGMzQmxZMmxtYVdNZ1JFNVRJRk4xWm1acG)/R"; reference:md5,65c64c5aa55d3d78f08456cb20012fcf; classtype:unknown; sid:2036580; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2022_05_12, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_05_12;)