ET MALWARE W32/Witch.3FA0!tr CnC Activity

Query · suricata

flow:established,to_server;
http.request_line;
content:"POST /?opt=put&type=text"; startswith; fast_pattern;
http.header_names;
content:!"|0d 0a|User-Agent|0d 0a|";
http.request_body;
content:"&mac=";
content:"&pcname="; distance:12; within:8;
Raw source ET MALWARE W32/Witch.3FA0!tr CnC Activity · 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 W32/Witch.3FA0!tr CnC Activity";
    flow:established,to_server;
    http.request_line;
    content:"POST /?opt=put&type=text"; startswith; fast_pattern;
    http.header_names;
    content:!"|0d 0a|User-Agent|0d 0a|";
    http.request_body;
    content:"&mac=";
    content:"&pcname="; distance:12; within:8;
    reference:md5,db7ffa8d3fa480e489c9062b18067f36;
    classtype:command-and-control;
    sid:2033814; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_08_26, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_08_26;
)

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