alert tcp any any -> $EXTERNAL_NET any (msg:"🐾 - 🚨 DarkVision 🪟 C2 👿 established connexion"; flow:to_server, stateless; flowbits:isset,pptrls.darkvision; content:"|24 00 01 00 62 00 69 00 67|"; startswith; content:"|72 00 65 00 67 00 73 00 76 00 63 00 73 00 2e 00 65 00 78 00 65|"; content:"|00 00|"; endswith; target:src_ip; reference:url,https://malpedia.caad.fkie.fraunhofer.de/details/win.darkvision_rat; metadata:attack_target Client_and_Server, signature_severity Major, affected_product Windows_XP_Vista_7_8_10_11_Server_32_64_Bit, mitre_tactic_id TA0011, mitre_tactic_name Command_and_Control, mitre_technique_id T1071.001, mitre_technique_name Application_Layer_Protocol_Web_Protocols, former_category MALWARE, malware_family DarkVision, created_at 2025_03_16, updated_at 2025_03_16; sid:3321429; rev:1; classtype:trojan-activity;)