alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED Executable served from Amazon S3"; flow:established,to_client; content:"Server|3A| AmazonS3"; content:"MZ"; isdataat:80,relative; content:"PE"; distance:0; reference:url,blog.trendmicro.com/cybercriminals-using-amazon-web-services-aws-to-host-malware/; reference:url,www.securelist.com/en/blog/208188099/Financial_data_stealing_Malware_now_on_Amazon_Web_Services_Cloud; classtype:bad-unknown; sid:2013437; rev:5; metadata:created_at 2011_08_19, signature_severity Unknown, updated_at 2019_07_26;)