ET MALWARE Ave Maria/Warzone RAT Encrypted CnC Checkin (Inbound)

Query · suricata

flow:established,to_client;
stream_size:server,=,13;
dsize:12;
content:"|5a 6f 57 81|"; depth:4; fast_pattern;
content:"|09 a4 b9|"; distance:1; within:3;
content:"|e6 55 6f |"; distance:1; within:3;
Raw source ET MALWARE Ave Maria/Warzone RAT Encrypted CnC Checkin (Inbound) · 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 any -> $HOME_NET any (
    msg:"ET MALWARE Ave Maria/Warzone RAT Encrypted CnC Checkin (Inbound)";
    flow:established,to_client;
    stream_size:server,=,13;
    dsize:12;
    content:"|5a 6f 57 81|"; depth:4; fast_pattern;
    content:"|09 a4 b9|"; distance:1; within:3;
    content:"|e6 55 6f |"; distance:1; within:3;
    reference:md5,3bc9680077b50ad074e607b3ba700edc;
    reference:url,twitter.com/StopMalvertisin/status/1549826315884572672;
    classtype:command-and-control;
    sid:2037801; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_07_21, deployment Perimeter, malware_family AveMariaRAT, confidence High, signature_severity Major, updated_at 2022_07_21, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1573, mitre_technique_name Encrypted_Channel;
)

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