alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED Blackhole obfuscated base64 decoder Sep 12 2013"; flow:established,from_server; file_data; content:" & 15) << 4)"; content:" & 3) << (3+3))"; fast_pattern:only; flowbits:set,et.exploitkitlanding; classtype:trojan-activity; sid:2017461; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2013_09_13, deployment Perimeter, malware_family Blackhole, signature_severity Critical, tag Blackhole, tag Exploit_Kit, updated_at 2019_07_26, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1027, mitre_technique_name Obfuscated_Files_or_Information;)