ET MALWARE Campo Loader Activity (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/campo/"; startswith; fast_pattern;
pcre:"/^[a-z](?:[0-9])?\/[a-z](?:[0-9]?)$/R";
http.host;
pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/";
http.header_names;
content:!"Referer";
Raw source ET MALWARE Campo Loader 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Campo Loader Activity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/campo/"; startswith; fast_pattern;
    pcre:"/^[a-z](?:[0-9])?\/[a-z](?:[0-9]?)$/R";
    http.host;
    pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/";
    http.header_names;
    content:!"Referer";
    reference:url,orangecyberdefense.com/global/blog/cybersoc/in-the-eye-of-our-cybersoc-campo-loader-analysis-and-detection-perspectives/;
    reference:md5,c865db24e6a0ca317424eb1c1543426e;
    reference:md5,dd6c4275c1b7b761b6f96a7e1e2f3607;
    classtype:trojan-activity;
    sid:2032352; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2021_03_30, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_08_10;
)

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