ET MALWARE MarkiRAT CnC Checkin Attempt

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/i.php|3f|u|3d|"; startswith; fast_pattern;
content:"i|3d|"; distance:0;
target:src_ip;
Raw source ET MALWARE MarkiRAT CnC Checkin Attempt · 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 MarkiRAT CnC Checkin Attempt";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/i.php|3f|u|3d|"; startswith; fast_pattern;
    content:"i|3d|"; distance:0;
    reference:url,www.recordedfuture.com/research/nexus-tag182-disseminates-markirat;
    classtype:trojan-activity;
    sid:2070179; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2026_07_02, deployment Perimeter, malware_family Marki, performance_impact Low, confidence High, signature_severity Major, tag RAT, tag TAG_182, updated_at 2026_07_02, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
    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.