alert tcp-pkt $EXTERNAL_NET 222 -> $HOME_NET any (msg:"ET MALWARE Win32/QuasarRAT CnC Traffic"; flow:established,to_client; dsize:68; content:"|40 00 00 00|"; depth:4; fast_pattern; stream_size:server,<,210; reference:url,twitter.com/James_inthe_box/status/1494023718741286915; classtype:trojan-activity; sid:2035211; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_02_17, deployment Perimeter, malware_family Win32_QuasarRAT, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_07_27;)