alert http $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET WEB_CLIENT Driveby bredolab hidden div served by nginx"; flow:established,to_client; http.server; content:"nginx"; startswith; file.data; content:"<div style=|22|visibility|3a| hidden|3b 22|><"; fast_pattern; depth:120; classtype:bad-unknown; sid:2011355; rev:5; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2010_09_28, deployment Perimeter, signature_severity Major, tag DriveBy, updated_at 2024_04_09;)