ET MALWARE TA404 Comebacker Related Activity (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/upload.asp"; endswith; fast_pattern;
http.header_names;
content:"|0d 0a|Content-Type|0d 0a|Connection|0d 0a|"; startswith;
content:!"Referer";
http.cookie;
content:"ASPSESSIONID";
content:!"="; within:8;
target:src_ip;
Raw source ET MALWARE TA404 Comebacker Related Activity (POST) · Suricata
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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 TA404 Comebacker Related Activity (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/upload.asp"; endswith; fast_pattern;
    http.header_names;
    content:"|0d 0a|Content-Type|0d 0a|Connection|0d 0a|"; startswith;
    content:!"Referer";
    http.cookie;
    content:"ASPSESSIONID";
    content:!"="; within:8;
    reference:md5,d8a8cc25bf5ef5b96ff7a64f663cbd29;
    classtype:trojan-activity;
    sid:2049276; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_11_21, deployment Perimeter, performance_impact Moderate, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_11_21;
    target:src_ip;
)

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