ET MALWARE CobaltStrike SMB P2P Default Msagent Named Pipe Interaction

Query · suricata

flow:established,to_server;
content:"SMB"; depth:8;
content:"|5c 00|m|00|s|00|a|00|g|00|e|00|n|00|t|00|_|00|"; nocase; distance:0; fast_pattern;
content:!"|00 22 00 5c 00|m|00|s|00|a|00|g|00|e|00|n|00|t|00|_|00|";
Raw source ET MALWARE CobaltStrike SMB P2P Default Msagent Named Pipe Interaction · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert smb any any -> $HOME_NET any (
    msg:"ET MALWARE CobaltStrike SMB P2P Default Msagent Named Pipe Interaction";
    flow:established,to_server;
    content:"SMB"; depth:8;
    content:"|5c 00|m|00|s|00|a|00|g|00|e|00|n|00|t|00|_|00|"; nocase; distance:0; fast_pattern;
    content:!"|00 22 00 5c 00|m|00|s|00|a|00|g|00|e|00|n|00|t|00|_|00|";
    reference:url,blog.cobaltstrike.com/2015/10/07/named-pipe-pivoting/;
    reference:url,www.cobaltstrike.com/help-malleable-c2;
    reference:url,posts.specterops.io/designing-peer-to-peer-command-and-control-ad2c61740456;
    classtype:targeted-activity;
    sid:2027325; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2019_05_07, deployment Perimeter, deployment Internal, malware_family Cobalt_Strike, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2023_08_24, reviewed_at 2023_08_24;
)

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