ET MALWARE GratefulPOS Covert DNS CnC Initial Checkin

Query · suricata

dns.query;
content:".grp"; within:12;
content:"ping.adm."; within:15; fast_pattern;
isdataat:30,relative;
pcre:"/^[a-f0-9]{8}\.grp[0-9]*\.ping\.adm\.(?:[a-f0-9]+\.){2,}/";
Raw source ET MALWARE GratefulPOS Covert DNS CnC Initial Checkin · 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 GratefulPOS Covert DNS CnC Initial Checkin";
    dns.query;
    content:".grp"; within:12;
    content:"ping.adm."; within:15; fast_pattern;
    isdataat:30,relative;
    pcre:"/^[a-f0-9]{8}\.grp[0-9]*\.ping\.adm\.(?:[a-f0-9]+\.){2,}/";
    reference:md5,67a53bd24ee8499fed79c8c368e05f7a;
    reference:url,community.rsa.com/community/products/netwitness/blog/2017/12/08/gratefulpos-credit-card-stealing-malware-just-in-time-for-the-shopping-season;
    classtype:command-and-control;
    sid:2025144; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_12_11, deployment Perimeter, malware_family Grateful_POS, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2020_11_17;
)

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