ET MALWARE Loxes/Mongall Related CnC Beacon M2 (GET)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Loxes/Mongall Related CnC Beacon M2 (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:!".";
    content:!"?";
    content:!"&";
    pcre:"/^\/(?:[a-zA-Z0-9+/]{4})*(?:[a-zA-Z0-9+/]{2}==|[a-zA-Z0-9+/]{3}=|[a-zA-Z0-9+/]{4})(?:[a-zA-Z=]{4})?(?:\x20?)$/";
    http.header;
    content:!"Content-";
    http.user_agent;
    content:"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.66 Safari/537.36"; fast_pattern; bsize:101;
    http.header_names;
    content:!"Accept";
    content:!"Referer|0d 0a|";
    reference:md5,d396d0709c0de53e24f1804d392ec968;
    reference:url,www.sentinelone.com/labs/aoqin-dragon-newly-discovered-chinese-linked-apt-has-been-quietly-spying-on-organizations-for-10-years/;
    classtype:command-and-control;
    sid:2036980; rev:5;
    metadata:attack_target Client_Endpoint, created_at 2016_02_12, deployment Perimeter, malware_family Mongall, malware_family Loxes, malware_family AoqinDragon, signature_severity Major, tag c2, updated_at 2022_06_14, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)