alert smtp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Win32/RemoteUtilities Checkin via SMTP"; flow:established,to_server; content:"|0d 0a|SUQ6"; content:"0J3QsNC30LLQsNC90LjQtSDQutC+0LzQv9GM0Y7RgtC1"; distance:0; fast_pattern; classtype:pup-activity; sid:2031618; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_02_12, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_02_12;)