Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET RETIRED Win32/TyphonReborn Telegram CnC Checkin"; flow:established,to_client; http.response_line; content:"HTTP/1.1 200 OK"; http.response_body; content:"|7b 22|ok|22 3a|true|2c 22|result|22 3a 7b 22|message_id|22 3a|"; startswith; content:"|22|is_bot|22 3a|true|2c 22|first_name|22 3a 22|Typhon|22 2c|"; distance:0; content:"|22|username|22 3a 22|TyphonSyphonBot|22 7d 2c|"; distance:0; content:"New TyphonReborn log"; distance:0; fast_pattern; reference:md5,d1d84c844681fe3c672a713c1a3bf52c; reference:url,unit42.paloaltonetworks.com/typhon-reborn-stealer/; classtype:trojan-activity; sid:2039785; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_11_15, deployment Perimeter, deployment SSLDecrypt, former_category MALWARE, malware_family Win32_TyphonReborn, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_23, reviewed_at 2024_09_23;)