ET MALWARE Lyposit Ransomware Checkin 1

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Lyposit Ransomware Checkin 1";
    flow:established,to_server;
    http.method;
    content:"GET"; nocase;
    http.uri;
    content:"/ad"; depth:3;
    pcre:"/^\/ad[^\x2f]*?\/\?[a-z]{1,5}\x3d\x2e?[a-z0-9]+?$/i";
    http.user_agent;
    content:"Microsoft BITS/"; depth:15;
    classtype:command-and-control;
    sid:2015957; rev:8;
    metadata:attack_target Client_Endpoint, created_at 2012_11_29, deployment Perimeter, signature_severity Major, tag Ransomware, updated_at 2020_04_24, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;
)