ET MALWARE Win32/7ev3n Ransomware Process Checkin

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/7ev3n Ransomware Process Checkin";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:".php?SSTART="; nocase;
    content:"&CRYPTED_DATA="; nocase; distance:0; fast_pattern;
    content:"&ID="; nocase; distance:0;
    http.user_agent;
    content:"Internet Explorer"; bsize:17;
    http.header_names;
    content:!"Accept";
    content:!"Referer|0d 0a|";
    reference:md5,9f8bc96c96d43ecb69f883388d228754;
    classtype:command-and-control;
    sid:2022403; rev:3;
    metadata:attack_target Client_Endpoint, created_at 2016_01_22, deployment Perimeter, malware_family Win32_7ev3n, confidence High, signature_severity Major, tag Ransomware, updated_at 2020_06_17, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;
)