alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Parallax CnC Response Activity M10"; flow:established,to_client; content:"|29 f5 98 f5|"; depth:4; fast_pattern; content:"|65 b3 b3|"; distance:1; within:3; flowbits:isset,ET.Parallax-10; reference:md5,9d60d8928bc0478b3029e59024b5f407; classtype:command-and-control; sid:2030181; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_05_18, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_05_18;)