ET MALWARE Win32/CopperStealer CnC Activity M3

Query · suricata

flow:established,to_server;
http.request_line;
content:"POST /info/"; startswith; fast_pattern;
pcre:"/(?:retdl|fb|step) HTTP\/1\.1$/R";
http.content_type;
content:"application/x-www-form-urlencoded"; bsize:33;
http.request_body;
content:"info="; startswith;
content:!"&";
Raw source ET MALWARE Win32/CopperStealer CnC Activity M3 · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/CopperStealer CnC Activity M3";
    flow:established,to_server;
    http.request_line;
    content:"POST /info/"; startswith; fast_pattern;
    pcre:"/(?:retdl|fb|step) HTTP\/1\.1$/R";
    http.content_type;
    content:"application/x-www-form-urlencoded"; bsize:33;
    http.request_body;
    content:"info="; startswith;
    content:!"&";
    reference:md5,acd347a1839ee422d9393a09b5302ea2;
    classtype:command-and-control;
    sid:2031927; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_01_21, deployment Perimeter, malware_family Win32_CopperStealer, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_01_21;
)

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