ET MALWARE ReverseRat 3.0 CnC Checkin M1

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:!".";
content:!"&";
content:!"=";
http.request_body;
content:"|3b 83 8f bc 30 b7 0d a6 4a 90|"; startswith; fast_pattern;
http.header_names;
content:!"|0d 0a|Referer|0d 0a|";
content:!"|0d 0a|User-Agent|0d 0a|";
target:src_ip;
Raw source ET MALWARE ReverseRat 3.0 CnC Checkin M1 · 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 ReverseRat 3.0 CnC Checkin M1";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:!".";
    content:!"&";
    content:!"=";
    http.request_body;
    content:"|3b 83 8f bc 30 b7 0d a6 4a 90|"; startswith; fast_pattern;
    http.header_names;
    content:!"|0d 0a|Referer|0d 0a|";
    content:!"|0d 0a|User-Agent|0d 0a|";
    reference:md5,0baa1d0cc20d80fa47eeb764292b9e98;
    reference:url,threatmon.io/apt-sidecopy-targeting-indian-government-entities/;
    reference:url,twitter.com/souiten/status/1620629752863404032;
    classtype:command-and-control;
    sid:2044379; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_02_28, deployment Perimeter, malware_family ReverseRAT, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_02_28;
    target:src_ip;
)

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