ET MALWARE Private Loader Related Activity (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/api/b"; startswith; fast_pattern;
content:".php"; endswith;
http.host;
pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/";
http.user_agent;
content:!"Linux";
http.header_names;
content:"|0d 0a|Connection|0d 0a|"; startswith;
content:!"|0d 0a|Referer|0d 0a|";
Raw source ET MALWARE Private Loader Related Activity (GET) · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Private Loader Related Activity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/api/b"; startswith; fast_pattern;
    content:".php"; endswith;
    http.host;
    pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/";
    http.user_agent;
    content:!"Linux";
    http.header_names;
    content:"|0d 0a|Connection|0d 0a|"; startswith;
    content:!"|0d 0a|Referer|0d 0a|";
    reference:md5,362697c95a1c9964af1ab23ddfc29b04;
    classtype:trojan-activity;
    sid:2052789; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_05_20, deployment Perimeter, confidence Medium, signature_severity Major, tag c2, updated_at 2024_05_20, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
)

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