alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SHELLCODE Hex Obfuscated JavaScript Heap Spray 41414141"; flow:established,to_client; content:"|5C|x41|5C|x41|5C|x41|5C|x41"; nocase; fast_pattern:only; reference:url,www.darkreading.com/security/vulnerabilities/221901428/index.html; classtype:shellcode-detect; sid:2013273; rev:3; metadata:created_at 2011_07_14, confidence High, signature_severity Major, updated_at 2019_07_26, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1027, mitre_technique_name Obfuscated_Files_or_Information;)