ET MALWARE Observed Kamasers DDOS Botnet User-Agent (System-Updater/5.0)

Query · suricata

flow:established,to_server;
http.user_agent; bsize:18;
content:"System|2d|Updater|2f|5|2e|0";
target:src_ip;
Raw source ET MALWARE Observed Kamasers DDOS Botnet User-Agent (System-Updater/5.0) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Observed Kamasers DDOS Botnet User-Agent (System-Updater/5.0)";
    flow:established,to_server;
    http.user_agent; bsize:18;
    content:"System|2d|Updater|2f|5|2e|0";
    reference:md5,6f0aa62d8d6111908e3b90afa374c77a;
    reference:url,app.any.run/tasks/fbaf505e-bf8d-4ebf-b29c-64e9f8f5028e;
    classtype:command-and-control;
    sid:2065262; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2025_10_21, deployment Perimeter, malware_family Kamasers, confidence High, signature_severity Critical, tag c2, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_10_21, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
    target:src_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.