ET MALWARE APT36 User-Agent Observed (FitnessTracker/)

Query · suricata

flow:established,to_server;
http.user_agent;
content:"FitnessTracker/"; startswith; fast_pattern;
pcre:"/^\d{1,2}\x2e\d{1,5}$/R";
Raw source ET MALWARE APT36 User-Agent Observed (FitnessTracker/) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE APT36 User-Agent Observed (FitnessTracker/)";
    flow:established,to_server;
    http.user_agent;
    content:"FitnessTracker/"; startswith; fast_pattern;
    pcre:"/^\d{1,2}\x2e\d{1,5}$/R";
    classtype:trojan-activity;
    sid:2068974; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_04_24, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag APT36, updated_at 2026_04_24, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
)

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