ET MALWARE Qarallax RAT Keepalive C2

Query · suricata

flow:from_server,established;
flowbits:isset,ET.qarallax;
content:"|00 00 0c 00 00 00 00 00 00 00|"; depth:10;
threshold:type both, track by_src, count 5, seconds 30;

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

Raw source ET MALWARE Qarallax RAT Keepalive C2 · 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 1714 -> $HOME_NET any (
    msg:"ET MALWARE Qarallax RAT Keepalive C2";
    flow:from_server,established;
    flowbits:isset,ET.qarallax;
    content:"|00 00 0c 00 00 00 00 00 00 00|"; depth:10;
    threshold:type both, track by_src, count 5, seconds 30;
    reference:md5,cf178c55c0572d8fea89137c62afdc98;
    reference:url,labsblog.f-secure.com/2016/06/07/qarallax-rat-spying-on-us-visa-applicants/;
    classtype:command-and-control;
    sid:2022883; rev:1;
    metadata:created_at 2016_06_08, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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