ET MALWARE DeskRAT CnC Welcome Message

Query · suricata

flow:established,to_client;
content:"|7b 22|type|22 3a 22|welcome|22 2c 22|client|5f|id|22 3a 22|"; depth:35;
content:"|22 2c 22|data|22 3a 22|Welcome|20|to|20|Stealth|20|Server|22 2c 22|"; fast_pattern;
threshold:type limit,count 1,seconds 300,track by_dst;
target:dest_ip;
Raw source ET MALWARE DeskRAT CnC Welcome Message · 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 $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE DeskRAT CnC Welcome Message";
    flow:established,to_client;
    content:"|7b 22|type|22 3a 22|welcome|22 2c 22|client|5f|id|22 3a 22|"; depth:35;
    content:"|22 2c 22|data|22 3a 22|Welcome|20|to|20|Stealth|20|Server|22 2c 22|"; fast_pattern;
    threshold:type limit,count 1,seconds 300,track by_dst;
    classtype:command-and-control;
    sid:2066659; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_01_09, deployment Perimeter, deployment SSLDecrypt, malware_family DeskRAT, confidence High, signature_severity Critical, updated_at 2026_01_09;
    target:dest_ip;
)

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