alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT CVE-2016-0189 Common Construct M1"; flow:established,from_server; file_data; content:"%u0008%u4141%u4141%u4141"; nocase; content:"redim"; nocase; content:"Preserve"; content:"2000"; distance:0; pcre:"/^\s*?\x29/Rs"; content:"%u400C%u0000%u0000%u0000"; nocase; reference:url,theori.io/research/cve-2016-0189; reference:cve,2016-0189; classtype:attempted-user; sid:2022971; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_07_15, cve CVE_2016_0189, deployment Perimeter, performance_impact Low, signature_severity Major, tag CVE_2016_0189, tag CISA_KEV, updated_at 2020_08_19;)