alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET HUNTING EXE Base64 Encoded potential malware"; flow:established,from_server; file.data; content:"TVqQAAMAAAAEAAAA//8AALgAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"; fast_pattern; content:!"<html"; nocase; content:!"<body"; nocase; content:!"<script"; nocase; reference:url,urlhaus.abuse.ch/url/319004/; classtype:misc-activity; sid:2029538; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_02_26, deployment Perimeter, confidence Low, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_02_26;)