ET MALWARE FrameworkPOS Covert DNS CnC Beacon 2

alert udp $HOME_NET any -> any 53 (
    msg:"ET MALWARE FrameworkPOS Covert DNS CnC Beacon 2";
    content:"|01|"; offset:2; depth:1;
    content:"|00 01 00 00 00 00 00|"; distance:1; within:7;
    content:"dc978a97"; nocase; distance:6;
    content:"|05|alert"; nocase; offset:12; fast_pattern;
    pcre:"/^[\x08-\xFF](?:[a-f0-9]{2})*?dc978a97/Ri";
    reference:md5,a5dc57aea5f397c2313e127a6e01aa00;
    reference:url,blog.gdatasoftware.com/blog/article/new-frameworkpos-variant-exfiltrates-data-via-dns-requests.html;
    classtype:command-and-control;
    sid:2019455; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2014_10_16, deployment Perimeter, confidence Medium, signature_severity Major, tag c2, updated_at 2019_08_29, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)