ET MALWARE OilRig QUADAGENT DNS Tunneling

Query · suricata

dns.query;
content:"mail."; nocase;
pcre:"/^\d{6}/Ri";
content:".cpuproc.com"; fast_pattern; nocase; endswith; bsize:23;
threshold:type limit, count 1, seconds 60, track by_src;
Raw source ET MALWARE OilRig QUADAGENT DNS Tunneling · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert dns $HOME_NET any -> any any (
    msg:"ET MALWARE OilRig QUADAGENT DNS Tunneling";
    dns.query;
    content:"mail."; nocase;
    pcre:"/^\d{6}/Ri";
    content:".cpuproc.com"; fast_pattern; nocase; endswith; bsize:23;
    threshold:type limit, count 1, seconds 60, track by_src;
    reference:md5,d51c2ffce844d42bab2f2c3131e3dbd4;
    reference:url,researchcenter.paloaltonetworks.com/2018/07/unit42-oilrig-targets-technology-service-provider-government-agency-quadagent/;
    classtype:trojan-activity;
    sid:2025894; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_07_25, deployment Perimeter, malware_family QuadAgent, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_07_21;
)

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