ET MALWARE Backdoor Win32/Hupigon.CK Server Idle

Query · suricata

flow:to_client,established;
content:"|00 00 00 01 00 00 00|"; offset:1; depth:7; fast_pattern;
content:"|78 9c|"; distance:5; within:2;
content:"|00 00 1f 00 1f|"; distance:2; within:5;
Raw source ET MALWARE Backdoor Win32/Hupigon.CK Server Idle · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Backdoor Win32/Hupigon.CK Server Idle";
    flow:to_client,established;
    content:"|00 00 00 01 00 00 00|"; offset:1; depth:7; fast_pattern;
    content:"|78 9c|"; distance:5; within:2;
    content:"|00 00 1f 00 1f|"; distance:2; within:5;
    classtype:trojan-activity;
    sid:2014958; rev:1;
    metadata:created_at 2012_06_26, malware_family Win32_Hupigon_CK, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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