alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT Ghostscript illegal delete bindnow attempt"; flow:to_client,established; file_data; content:"unlink("; fast_pattern; content:"|2E|bindnow"; content:"stopped"; distance:0; pcre:"/\x2Ebindnow[^\x7D]+\x7D\s*stopped/smi"; reference:url,seclists.org/oss-sec/2018/q3/142; classtype:attempted-user; sid:2026089; rev:1; metadata:attack_target Client_Endpoint, created_at 2018_09_05, deployment Perimeter, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)