alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE MSIL/Diezen CnC Checkin M2"; flow:established,to_server; dsize:<400; content:"|20 2d 3e 20|i|20|am|20|here|20|boss|20 21 20 0d 0a|"; fast_pattern; content:"User|20|=|20|"; distance:0; content:"|20 20|MachineName|20|=|20|"; reference:url,threatrecon.nshc.net/2019/10/24/sectord01-when-anime-goes-cyber/; classtype:command-and-control; sid:2028907; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2019_10_25, deployment Perimeter, malware_family Sakabota, malware_family Diezen, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_10_25;)