ET MALWARE CobianRAT Receiving Commands From CnC

Query · suricata

flow:from_server,established;
content:"|01 00 00 00 FF FF FF FF 01|"; depth:15; fast_pattern;
content:"|00 00 02|"; within:30;
pcre:"/^(?:Lg|Execute|FLD|Sc)\x7c\x2d\x7c/R";
Raw source ET MALWARE CobianRAT Receiving Commands From CnC · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $EXTERNAL_NET 1024: -> $HOME_NET any (
    msg:"ET MALWARE CobianRAT Receiving Commands From CnC";
    flow:from_server,established;
    content:"|01 00 00 00 FF FF FF FF 01|"; depth:15; fast_pattern;
    content:"|00 00 02|"; within:30;
    pcre:"/^(?:Lg|Execute|FLD|Sc)\x7c\x2d\x7c/R";
    reference:md5,94911666a61beb59d2988c4fc7003e5a;
    reference:url,www.zscaler.com/blogs/research/cobian-rat-backdoored-rat;
    classtype:command-and-control;
    sid:2024652; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_09_01, deployment Perimeter, malware_family CobianRAT, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2019_07_26;
)

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