ET MALWARE Win32/Spyder Successful CnC Checkin

Query · suricata

flow:established,to_client;
http.stat_code;
content:"200";
http.response_body; bsize:3;
content:"|7b 7d|";
flowbits:isset,ET.Spyder2023.1;
threshold:type limit, count 1, seconds 60, track by_src;

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 Win32/Spyder Successful CnC Checkin · 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 http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Win32/Spyder Successful CnC Checkin";
    flow:established,to_client;
    http.stat_code;
    content:"200";
    http.response_body; bsize:3;
    content:"|7b 7d|";
    flowbits:isset,ET.Spyder2023.1;
    threshold:type limit, count 1, seconds 60, track by_src;
    classtype:command-and-control;
    sid:2049699; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_12_15, deployment Perimeter, malware_family Spyder, confidence High, signature_severity Major, tag RAT, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_12_15, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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