alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Java EXE Download by Vulnerable Version - Likely Driveby"; flowbits:isset,ET.http.javaclient.vulnerable; flow:established,to_client; content:"|0d 0a 0d 0a|MZ"; byte_jump:4,58,relative,little; content:"PE|00 00|"; distance:-64; within:4; threshold:type limit,track by_src,count 1,seconds 3; classtype:trojan-activity; sid:2013036; rev:7; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2011_06_16, deployment Perimeter, confidence Medium, signature_severity Major, tag DriveBy, updated_at 2019_07_26;)