ET MALWARE UNK_MonkeyWrench Payload Request

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/jfgg/"; startswith; fast_pattern;
content:".rar"; endswith;
http.user_agent;
content:"curl|2f|"; startswith;
http.accept; bsize:3;
content:"|2a 2f 2a|";
http.header_names;
content:"|0d 0a|host|0d 0a|user-agent|0d 0a|accept|0d 0a 0d 0a|"; nocase;
target:src_ip;
Raw source ET MALWARE UNK_MonkeyWrench Payload Request · 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 UNK_MonkeyWrench Payload Request";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/jfgg/"; startswith; fast_pattern;
    content:".rar"; endswith;
    http.user_agent;
    content:"curl|2f|"; startswith;
    http.accept; bsize:3;
    content:"|2a 2f 2a|";
    http.header_names;
    content:"|0d 0a|host|0d 0a|user-agent|0d 0a|accept|0d 0a 0d 0a|"; nocase;
    reference:md5,664a7f2d21f20f4a9747981145cb1332;
    classtype:trojan-activity;
    sid:2068524; 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_01, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Critical, tag c2, tag Description_Generated_By_Proofpoint_Nexus, tag UNK_MonkeyWrench, updated_at 2026_04_01, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
    target:src_ip;
)

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