alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE TitanFox Loader CnC Checkin"; flow:established,to_server; dsize:<100; content:"|00 01 00 01 02 02 2b 6e 65 74 2e 74 63 70 3a 2f 2f|"; depth:30; fast_pattern; reference:url,app.any.run/tasks/421691f8-bb33-4be3-abcb-6ee36e772856; classtype:command-and-control; sid:2026759; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_01_04, deployment Perimeter, malware_family TitanFox, performance_impact Low, confidence High, signature_severity Major, tag Loader, updated_at 2019_07_26;)