ET MALWARE DeskRAT CnC HeartBeat Request

Query · suricata

flow:established,to_client;
content:"|7b 22|type|22 3a 22|heartbeat|22 2c 22|timestamp|22 3a 22|"; depth:37;
threshold:type limit,count 1,seconds 300,track by_src;
target:dest_ip;
Raw source ET MALWARE DeskRAT CnC HeartBeat Request · 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 DeskRAT CnC HeartBeat Request";
    flow:established,to_client;
    content:"|7b 22|type|22 3a 22|heartbeat|22 2c 22|timestamp|22 3a 22|"; depth:37;
    threshold:type limit,count 1,seconds 300,track by_src;
    classtype:command-and-control;
    sid:2066658; 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, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
    target:dest_ip;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.