alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED Blackhole Java Exploit Recent Jar (1)"; flow:established,from_server; file_data; content:"PK"; within:2; content:"chcyih.class"; classtype:trojan-activity; sid:2015486; rev:9; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2012_07_20, deployment Perimeter, malware_family Blackhole, signature_severity Critical, tag Blackhole, tag Exploit_Kit, updated_at 2019_07_26;)