ET MALWARE Amatera Stealer CnC Checkin Attempt M2

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/enc_ujs/"; fast_pattern; startswith;
pcre:"/^[a-f0-9]{8}-(?:[a-f0-9]{4}-){3}[a-f0-9]{12}$/R";
http.header_names;
content:!"|0d 0a|user-agent|0d 0a|"; nocase;
content:!"|0d 0a|referer|0d 0a|"; nocase;
target:src_ip;
Raw source ET MALWARE Amatera Stealer CnC Checkin Attempt M2 · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Amatera Stealer CnC Checkin Attempt M2";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/enc_ujs/"; fast_pattern; startswith;
    pcre:"/^[a-f0-9]{8}-(?:[a-f0-9]{4}-){3}[a-f0-9]{12}$/R";
    http.header_names;
    content:!"|0d 0a|user-agent|0d 0a|"; nocase;
    content:!"|0d 0a|referer|0d 0a|"; nocase;
    reference:md5,d2ead81bf0cf01741abf09a49bc5e8a0;
    classtype:trojan-activity;
    sid:2063371; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_10, attack_target Client_and_Server, tls_state TLSDecrypt, created_at 2025_07_09, deployment Perimeter, malware_family Amatera, performance_impact Low, confidence High, signature_severity Major, updated_at 2025_07_09, mitre_tactic_id TA0037, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
    target:src_ip;
)

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