alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE HVNC USR Init Detected"; flow:established,to_server; content:"|3b 00 00 00 19 00 00 00 12 01 00 00 2d 55 53 52|"; depth:16; content:"|00|"; endswith; reference:md5,4abde768b70e94093970901438e51cbd; classtype:trojan-activity; sid:2027831; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_08_09, deployment Perimeter, malware_family HVNC, performance_impact Low, confidence High, signature_severity Major, updated_at 2022_03_24;)