alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET DELETED Blackhole Loading Gif Inline Image"; flow:established,from_server; content:"background|3a|url(data|3a|image/gif|3b|base64,R0lGODlhEAAQAAAAACH/C05FVFNDQVBFMi4wAwH//"; classtype:trojan-activity; sid:2014842; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2012_06_01, deployment Perimeter, malware_family Blackhole, signature_severity Critical, tag Blackhole, tag Exploit_Kit, updated_at 2019_07_26;)