ET MALWARE Suspected Ares Loader Activity (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/panel/upload/"; startswith;
content:".cmp"; endswith; fast_pattern;
http.header_names;
content:"|0d 0a|Host|0d 0a|Cache-Control|0d 0a 0d 0a|"; bsize:25;
Raw source ET MALWARE Suspected Ares Loader Activity (GET) · 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 Suspected Ares Loader Activity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/panel/upload/"; startswith;
    content:".cmp"; endswith; fast_pattern;
    http.header_names;
    content:"|0d 0a|Host|0d 0a|Cache-Control|0d 0a 0d 0a|"; bsize:25;
    reference:md5,b3cdb7135bf99a921376870898b22155;
    reference:url,www.zscaler.com/blogs/security-research/ares-malware-grandson-kronos-banking-trojan;
    classtype:trojan-activity;
    sid:2032950; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_05_12, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_05_12;
)

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