alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET INFO WinHttpRequest Downloading EXE"; flow:established,to_client; flowbits:isset,et.WinHttpRequest; file.data; content:"MZ"; within:2; byte_jump:4,58,relative,little; content:"PE|00 00|"; distance:-64; within:4; classtype:misc-activity; sid:2019822; rev:9; metadata:attack_target Client_and_Server, created_at 2014_12_01, deployment Perimeter, confidence High, signature_severity Informational, updated_at 2024_03_14;)