alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT CVE-2017-0199 Common Obfus Stage 2 DL"; flow:established,from_server; file_data; content:"|7b 5c 72 74|"; within:4; content:!"|66|"; within:1; content:"|5C 6F 62 6A 61 75 74 6C 69 6E 6B|"; nocase; distance:0; reference:md5,8168b2305289ecc778216405d1fd7984; reference:cve,2017-0199; classtype:trojan-activity; sid:2024413; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_06_19, cve CVE_2017_0199, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag CISA_KEV, updated_at 2019_07_26;)