ET MALWARE Win32/NetDooka Framework RAT Sending System Information M2

Query · suricata

flow:established,to_server;
flowbits:isset,ET.Netbooka.SessionIDSent;
content:"|90 01 00 00|"; fast_pattern;
content:"|00 00|"; distance:2; within:2;
content:"|00 00 00|"; distance:1; within:3;
pcre:"/^(?:[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12})\x7c/R";
content:"|7c|"; distance:0;
content:"|7c|"; distance:2; within:1;

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

Raw source ET MALWARE Win32/NetDooka Framework RAT Sending System Information M2 · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $HOME_NET any -> $EXTERNAL_NET 1024: (
    msg:"ET MALWARE Win32/NetDooka Framework RAT Sending System Information M2";
    flow:established,to_server;
    flowbits:isset,ET.Netbooka.SessionIDSent;
    content:"|90 01 00 00|"; fast_pattern;
    content:"|00 00|"; distance:2; within:2;
    content:"|00 00 00|"; distance:1; within:3;
    pcre:"/^(?:[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12})\x7c/R";
    content:"|7c|"; distance:0;
    content:"|7c|"; distance:2; within:1;
    reference:url,www.trendmicro.com/en_us/research/22/e/netdooka-framework-distributed-via-privateloader-ppi.html;
    reference:md5,ff672b6d51815ef9c86e163bfd23f1a5;
    classtype:trojan-activity;
    sid:2036616; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_05_18, deployment Perimeter, malware_family NetDooka, performance_impact Moderate, confidence High, signature_severity Major, tag RAT, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_09_29, reviewed_at 2023_09_01;
)

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