alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Observed Suspicious UA (grab)"; flow:established,to_server; http.user_agent; bsize:4; content:"grab"; classtype:bad-unknown; sid:2030492; rev:2; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2020_07_10, deployment Perimeter, confidence High, signature_severity Informational, updated_at 2024_03_10;)