alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED Win32/HookSpoofer Stealer Sending System Information via Telegram (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/bot"; startswith; content:"/sendMessage?chat_id="; distance:0; content:"&text="; distance:0; content:"HookSpoofer|20 2d 20|Report|3a|"; distance:0; fast_pattern; http.host; content:"api.telegram.org"; bsize:16; reference:url,www.uptycs.com/blog/threat-research-hookspoofer; classtype:trojan-activity; sid:2044740; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_03_22, deployment Perimeter, deployment SSLDecrypt, former_category MALWARE, malware_family HookSpoofer, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_30, reviewed_at 2024_09_30; target:src_ip;)