ET MALWARE Win32/CopperStealer CnC Activity M2

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.host;
content:"|2e|"; offset:16; depth:1;
pcre:"/^[a-f0-9]{16}\./";
http.request_body;
content:"info="; startswith; fast_pattern;
pcre:"/^[A-Za-z0-9\-_~]{75,}$/R";
http.header_names;
content:!"Referer";
Raw source ET MALWARE Win32/CopperStealer CnC Activity M2 · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/CopperStealer CnC Activity M2";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.host;
    content:"|2e|"; offset:16; depth:1;
    pcre:"/^[a-f0-9]{16}\./";
    http.request_body;
    content:"info="; startswith; fast_pattern;
    pcre:"/^[A-Za-z0-9\-_~]{75,}$/R";
    http.header_names;
    content:!"Referer";
    reference:md5,b0110812a72552902f0bd69d640b8e1c;
    classtype:trojan-activity;
    sid:2031926; rev:5;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_06_30, deployment Perimeter, malware_family Win32_CopperStealer, confidence High, signature_severity Major, updated_at 2021_09_21;
)

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