alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT EITest SocEng Inject Jan 15 2017 M1"; flow:established,from_server; file_data; content:"|77 69 6e 64 6f 77 2e 63 68 72 6f 6d 65|"; nocase; content:"|77 69 6e 64 6f 77 2e 63 68 72 6f 6d 65 2e 77 65 62 73 74 6f 72 65|"; nocase; content:"|2e 6d 61 74 63 68 28 2f 3e 28 5c 77 3f 5c 73 3f 2e 2a 3f 29 3c 2f 67 29|"; nocase; fast_pattern; content:"|5b 69 5d 2e 72 65 70 6c 61 63 65 28 65 76 61 6c 28|"; content:"unescape"; nocase; pcre:"/^\s*\([^\x29]*(?:\%2F|\/)(?:\%5B|\[)(?:\%5E|^)(?=[^\x29]*(?:%3C|\<))(?=[^\x29]*(?:%3E|\>))(?=[^\x29]*(?:\%5C|\\)(?:\%6E|n))/Rsi"; classtype:social-engineering; sid:2023743; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2017_01_17, deployment Perimeter, malware_family EITest, confidence High, signature_severity Major, updated_at 2019_10_08;)