alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT Possible Inbound Flash Exploit (CVE-2018-15982)"; flow:established,from_server; http.stat_code; content:"200"; http.content_type; content:"application|2f|x-shockwave-flash"; file.data; content:"FWS"; depth:3; content:"cmd.exe|20 2f|c"; distance:0; nocase; fast_pattern; reference:url,www.malware-traffic-analysis.net/2019/08/01/index.html; classtype:attempted-user; sid:2027789; rev:2; metadata:attack_target Client_Endpoint, created_at 2019_08_02, cve CVE_2018_15982, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag CISA_KEV, updated_at 2020_08_31;)