ET MALWARE Win.Supper Tunnel C2 Magic Bytes Detected

Query · suricata

flow:established,to_server;
dsize:300;
content:"|69 11 55|"; offset:2; depth:8; fast_pattern;
target:dest_ip;
Raw source ET MALWARE Win.Supper Tunnel C2 Magic Bytes Detected · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp-pkt $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win.Supper Tunnel C2 Magic Bytes Detected";
    flow:established,to_server;
    dsize:300;
    content:"|69 11 55|"; offset:2; depth:8; fast_pattern;
    reference:url,c-b.io/2025-06-29+-+Supper+is+served;
    reference:url,malpedia.caad.fkie.fraunhofer.de/details/win.supper;
    classtype:trojan-activity;
    sid:2066435; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_12_22, deployment Perimeter, deployment SSLDecrypt, malware_family Supper, performance_impact Moderate, confidence Medium, signature_severity Major, tag Backdoor, updated_at 2025_12_22, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, 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.