ET MALWARE WEBC2-KT3 Intial Connection Beacon APT1 Related

Query · suricata

flow:established,to_server;
dsize:<11;
content:"*!Kt3+v|7c|"; depth:8;
flowbits:set,ET.WEBC2KT3;

Rule dependencies

Feeds into

Raw source ET MALWARE WEBC2-KT3 Intial Connection Beacon APT1 Related · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE WEBC2-KT3 Intial Connection Beacon APT1 Related";
    flow:established,to_server;
    dsize:<11;
    content:"*!Kt3+v|7c|"; depth:8;
    flowbits:set,ET.WEBC2KT3;
    reference:url,www.mandiant.com/apt1;
    reference:md5,ec3a2197ca6b63ee1454d99a6ae145ab;
    classtype:targeted-activity;
    sid:2016456; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2013_02_22, deployment Perimeter, signature_severity Major, tag c2, updated_at 2019_07_26, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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