ET MALWARE eCh0raix/QNAPCrypt Successful Server Response

Query · suricata

flow:established,to_client;
flowbits:isset,ET.QNAPCrypt.DetailReq;
http.response_line; bsize:17;
content:"HTTP/1.1 200 OK|0d 0a|";
http.content_type;
content:"application/json";
http.response_body;
content:"|7b 22|RsaPublicKey|22 3a 22|-----BEGIN RSA PUBLIC KEY";
content:"|22 7d 2c 7b 22|BtcPublicKey|22 3a 22|"; fast_pattern;
content:"|22 7d 2c 7b 22|Readme|22 3a 22|";

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 eCh0raix/QNAPCrypt Successful Server Response · 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 $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE eCh0raix/QNAPCrypt Successful Server Response";
    flow:established,to_client;
    flowbits:isset,ET.QNAPCrypt.DetailReq;
    http.response_line; bsize:17;
    content:"HTTP/1.1 200 OK|0d 0a|";
    http.content_type;
    content:"application/json";
    http.response_body;
    content:"|7b 22|RsaPublicKey|22 3a 22|-----BEGIN RSA PUBLIC KEY";
    content:"|22 7d 2c 7b 22|BtcPublicKey|22 3a 22|"; fast_pattern;
    content:"|22 7d 2c 7b 22|Readme|22 3a 22|";
    reference:url,www.intezer.com/blog-seizing-15-active-ransomware-campaigns-targeting-linux-file-storage-servers;
    classtype:trojan-activity;
    sid:2027705; rev:2;
    metadata:attack_target IoT, created_at 2019_07_11, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_04_30;
)

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