ET MALWARE Win32/Voltron/Spectre Stealer CnC Activity (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/v4/api_t.php"; bsize:13; fast_pattern;
http.user_agent;
content:"UserAgent"; bsize:9;
http.request_body;
content:"id="; startswith;
content:"&mid="; distance:0;
content:"&cmd_id="; distance:0;
content:"&msg_id="; distance:0;
content:"&msg="; distance:0;
http.header_names;
content:!"Referer";
Raw source ET MALWARE Win32/Voltron/Spectre Stealer CnC Activity (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 Win32/Voltron/Spectre Stealer CnC Activity (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/v4/api_t.php"; bsize:13; fast_pattern;
    http.user_agent;
    content:"UserAgent"; bsize:9;
    http.request_body;
    content:"id="; startswith;
    content:"&mid="; distance:0;
    content:"&cmd_id="; distance:0;
    content:"&msg_id="; distance:0;
    content:"&msg="; distance:0;
    http.header_names;
    content:!"Referer";
    classtype:trojan-activity;
    sid:2034041; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_09_17, deployment Perimeter, malware_family Win32_Voltron_Spectre, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_09_17;
)

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