ET HUNTING Gamaredon APT Style Delimiter Observed In HTTP Header

Query · suricata

flow:established,to_server;
http.header;
content:"|3a 3a 2f 2e|"; fast_pattern;
target:src_ip;
Raw source ET HUNTING Gamaredon APT Style Delimiter Observed In HTTP Header · 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 HUNTING Gamaredon APT Style Delimiter Observed In HTTP Header";
    flow:established,to_server;
    http.header;
    content:"|3a 3a 2f 2e|"; fast_pattern;
    reference:url,community.emergingthreats.net/t/sigs-possible-gamaredon-apt-delimiter/2667;
    reference:url,unit42.paloaltonetworks.com/trident-ursa/;
    classtype:misc-activity;
    sid:2061889; 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_04_25, deployment Perimeter, confidence Low, signature_severity Informational, tag c2, updated_at 2025_04_25, 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.