alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT Ghostscript setpattern type confusion attempt"; flow:to_client,established; file_data; content:"16#"; content:"setpattern"; distance:0; pcre:"/16#[^s]\d+\s*\x3E\x3E\s*setpattern/smi"; reference:url,seclists.org/oss-sec/2018/q3/142; classtype:attempted-user; sid:2026091; rev:1; metadata:attack_target Client_Endpoint, created_at 2018_09_05, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)