alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Win32.Raccoon Stealer - Telegram Mirror Checkin (generic)"; flow:established,to_client; file_data; content:"|3c|meta|20|name|3d 22|twitter|3a|description|22 20|content|3d 22|"; pcre:"/^[a-f0-9]{5}(?:[a-zA-Z0-9+\/]{4})*(?:[a-zA-Z0-9+\/]{2}==|[a-zA-Z0-9+\/]{3}=|[a-zA-Z0-9+\/]{4})[a-f0-9]{2}-v[a-f0-9]{2}\x0a\x22\x3e\x0a\x3c/R"; content:"|3c|meta|20|name|3d 22|twitter|3a|app|3a|id|3a|iphone|22 20|content|3d 22|686449807|22|"; fast_pattern; reference:md5,0b2463e542ff395417ecb1cd37f77556; classtype:command-and-control; sid:2034960; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_11_16, deployment Perimeter, malware_family Raccoon_Stealer, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_02_11;)