alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET DELETED Blackhole landing page with malicious Java applet"; flow:established,from_server; file_data; content:"<applet code=|27|buildService.MapYandex.class|27|"; content:".jar"; content:"</applet>"; classtype:bad-unknown; sid:2013553; rev:7; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2011_09_10, deployment Perimeter, malware_family Blackhole, signature_severity Critical, tag Blackhole, tag Exploit_Kit, updated_at 2019_07_26;)