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;
)