alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT Possible Microsoft RDP Client for Mac RCE"; flow:established,to_client; content:"rdp|3a 2f 2f|"; nocase; content:"drivestoredirect"; fast_pattern; nocase; distance:0; content:"rdp|3a 2f 2f|"; nocase; pcre:"/^\S+?drivestoredirect/Ri"; reference:url,www.wearesegment.com/research/Microsoft-Remote-Desktop-Client-for-Mac-Remote-Code-Execution; classtype:attempted-admin; sid:2023755; rev:1; metadata:affected_product Mac_OSX, attack_target Client_Endpoint, created_at 2017_01_24, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2019_07_26;)