ET MALWARE Mimikatz x64 Executable Transfer Over SMB

Query · suricata

flow:established,to_server;
flowbits:isset,ET.smb.binary;
content:"|33 ff|";
content:"|89 37|"; distance:1; within:2;
content:"|8b f3 45 85|"; distance:1; within:4;
content:"|74|"; distance:1; within:1;
content:"|4c 8b df 49|";
content:"|c1 e3 04 48|"; within:7;
content:"|8b cb 4c 03|"; within:7;
content:"|d8|"; within:4;

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 Mimikatz x64 Executable Transfer Over SMB · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp any any -> $HOME_NET 445 (
    msg:"ET MALWARE Mimikatz x64 Executable Transfer Over SMB";
    flow:established,to_server;
    flowbits:isset,ET.smb.binary;
    content:"|33 ff|";
    content:"|89 37|"; distance:1; within:2;
    content:"|8b f3 45 85|"; distance:1; within:4;
    content:"|74|"; distance:1; within:1;
    content:"|4c 8b df 49|";
    content:"|c1 e3 04 48|"; within:7;
    content:"|8b cb 4c 03|"; within:7;
    content:"|d8|"; within:4;
    reference:url,github.com/gentilkiwi/mimikatz;
    classtype:trojan-activity;
    sid:2029331; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_01_29, deployment Internal, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_01_29;
)

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