ET MALWARE CopperStealer - Remote Desktop - Initial Checkin

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.header;
content:"x-csrftoken|3a 20|x|0d 0a|"; fast_pattern;
http.content_type;
content:"application/x-www-form-urlencoded"; bsize:33;
http.request_body;
content:"guid="; startswith;
content:!"&"; distance:0;
isdataat:!37,relative;
Raw source ET MALWARE CopperStealer - Remote Desktop - Initial Checkin · 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 CopperStealer - Remote Desktop - Initial Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.header;
    content:"x-csrftoken|3a 20|x|0d 0a|"; fast_pattern;
    http.content_type;
    content:"application/x-www-form-urlencoded"; bsize:33;
    http.request_body;
    content:"guid="; startswith;
    content:!"&"; distance:0;
    isdataat:!37,relative;
    reference:md5,cb39d19f07ea387b1f1dcd22f889545b;
    reference:md5,04bc575585d4663f227cef14a65bea26;
    reference:url,www.trendmicro.com/en_us/research/22/f/websites-hosting-fake-cracks-spread-updated-copperstealer.html;
    classtype:trojan-activity;
    sid:2037030; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_06_17, deployment Perimeter, malware_family CopperStealer, confidence High, signature_severity Major, tag c2, updated_at 2022_06_17, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
)

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