ET MALWARE Arechclient2 Backdoor CnC Keep-Alive

Query · suricata

flow:established,from_server;
dsize:<100;
content:"|7b 22 54 79 70 65 22 3a 22 53 65 73 73 69 6f 6e 49 44 22 2c 22 53 65 73 73 69 6f 6e 49 44 22 3a 22|"; fast_pattern; depth:50;
content:"|7d|"; endswith;
Raw source ET MALWARE Arechclient2 Backdoor CnC Keep-Alive · 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 Arechclient2 Backdoor CnC Keep-Alive";
    flow:established,from_server;
    dsize:<100;
    content:"|7b 22 54 79 70 65 22 3a 22 53 65 73 73 69 6f 6e 49 44 22 2c 22 53 65 73 73 69 6f 6e 49 44 22 3a 22|"; fast_pattern; depth:50;
    content:"|7d|"; endswith;
    reference:md5,4ccba79d95dfd7d87b43643058e1cdd0;
    classtype:command-and-control;
    sid:2029219; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_01_02, deployment Perimeter, malware_family Arechclient2, confidence High, signature_severity Major, updated_at 2022_03_24, reviewed_at 2024_05_06;
)

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