ET MALWARE Trojan-Dropper.MSIL CnC Traffic - POST

Query · suricata

flow:established,to_server;
http.request_line;
content:"POST /log HTTP/1.1"; fast_pattern; startswith;
http.header;
content:"Expect|3a 20|100-continue|0d 0a|";
http.header_names;
content:!"Referer";
content:!"User-Agent";
Raw source ET MALWARE Trojan-Dropper.MSIL CnC Traffic - POST · 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 Trojan-Dropper.MSIL CnC Traffic - POST";
    flow:established,to_server;
    http.request_line;
    content:"POST /log HTTP/1.1"; fast_pattern; startswith;
    http.header;
    content:"Expect|3a 20|100-continue|0d 0a|";
    http.header_names;
    content:!"Referer";
    content:!"User-Agent";
    reference:md5,2a93655114ec83db8d38aea680e39453;
    reference:md5,f7744662b78e045946678b3aab34f5b5;
    classtype:trojan-activity;
    sid:2034341; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_11_03, deployment Perimeter, confidence High, signature_severity Major, tag c2, updated_at 2021_11_03;
)

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