alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Possible SharpShooter Framework Generated Script"; flow:established,to_client; file_data; content:"rc4=function|28|key,str|29|"; nocase; content:"key.charCodeAt|28|i%key.length|29|"; fast_pattern; nocase; distance:0; content:"String.fromCharCode|28|str.charCodeAt|28|"; content:"decodeBase64=function"; nocase; distance:0; content:"b64block="; nocase; distance:0; reference:url,www.mdsec.co.uk/2018/03/payload-generation-using-sharpshooter/; reference:url,blog.morphisec.com/sharpshooter-pen-testing-framework-used-in-attacks; classtype:trojan-activity; sid:2026918; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2019_02_18, deployment Perimeter, confidence Medium, signature_severity Major, updated_at 2019_07_26;)