ET MALWARE Atemu RAT User-Agent Observed (CommandExecutor/1.0)

Query · suricata

flow:established,to_server;
http.user_agent; bsize:19;
content:"CommandExecutor|2f|1.0"; fast_pattern;
target:src_ip;
Raw source ET MALWARE Atemu RAT User-Agent Observed (CommandExecutor/1.0) · 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 Atemu RAT User-Agent Observed (CommandExecutor/1.0)";
    flow:established,to_server;
    http.user_agent; bsize:19;
    content:"CommandExecutor|2f|1.0"; fast_pattern;
    reference:md5,a3ce0c6600781e0196aad961e92123ed;
    classtype:trojan-activity;
    sid:2068884; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_04_21, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, signature_severity Major, tag Atemu_RAT, updated_at 2026_04_21, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1573, mitre_technique_name Encrypted_Channel;
    target:src_ip;
)

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