alert tcp $EXTERNAL_NET any -> $HOME_NET 3389 (msg:"ET MALWARE MS Remote Desktop micros User Login Request"; flow:to_server,established; content:"|03 00 00|"; depth:3; content:"|e0 00 00 00 00 00|"; distance:2; within:6; content:"Cookie|3a| mstshash=micros|0d 0a|"; nocase; reference:url,intelcrawler.com/about/press08; classtype:protocol-command-decode; sid:2018124; rev:3; metadata:created_at 2014_02_12, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)