alert tcp $HOME_NET any -> $EXTERNAL_NET 1024: (msg:"ET MALWARE Win32/NetDooka Framework RAT Sending System Information M1"; flow:established,to_server; flowbits:isset,ET.Netbooka.SessionIDSent; content:"|90 01 00 00|"; fast_pattern; content:"|00 00|"; distance:2; within:2; content:"|00 00 00|"; distance:1; within:3; pcre:"/^(?:[0-9A-F]{2}(?:-)?){16}\x7c/R"; content:"|7c|"; distance:0; content:"|7c|"; distance:2; within:1; reference:url,www.trendmicro.com/en_us/research/22/e/netdooka-framework-distributed-via-privateloader-ppi.html; reference:md5,e13d4a4b5eaef60643ce56013fe94344; classtype:trojan-activity; sid:2036614; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_05_18, deployment Perimeter, malware_family NetDooka, performance_impact Moderate, confidence High, signature_severity Major, tag RAT, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_09_29, reviewed_at 2023_09_01;)