ET MALWARE Maldoc Sending Registration Information (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/target?id="; startswith; fast_pattern;
http.user_agent;
content:"|3b 20|.NET CLR 3.0.30729|3b 20|.NET CLR 3.5.30729|3b 20|";
http.header_names;
content:!"Referer";
target:src_ip;
Raw source ET MALWARE Maldoc Sending Registration Information (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 Maldoc Sending Registration Information (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/target?id="; startswith; fast_pattern;
    http.user_agent;
    content:"|3b 20|.NET CLR 3.0.30729|3b 20|.NET CLR 3.5.30729|3b 20|";
    http.header_names;
    content:!"Referer";
    reference:url,nsfocusglobal.com/warning-newly-discovered-apt-attacker-atlascross-exploits-red-cross-blood-drive-phishing-for-cyberattack/;
    reference:md5,7195d7e4926a0a85fbe81e40ab7c0ca4;
    reference:md5,459ebb0896943a34252c758185105ef9;
    classtype:trojan-activity;
    sid:2048319; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_09_28, deployment Perimeter, malware_family AtlasCross, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_09_29, reviewed_at 2023_09_28;
    target:src_ip;
)

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