alert tcp-pkt $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Win32/Killav.CM CnC Response"; flow:to_client,established; dsize:11; content:"|09 01 00 00 00 00 0b 00 00 00 00|"; startswith; fast_pattern; classtype:trojan-activity; sid:2035693; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_03_31, deployment Perimeter, malware_family Win32_Killav_CM, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_14;)