ET MALWARE W32/Wadolin.Downloader CnC Beacon

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE W32/Wadolin.Downloader CnC Beacon";
    flow:established,to_server;
    http.uri;
    content:"/upgrade-functions.php?v="; fast_pattern;
    content:"&id=";
    http.user_agent;
    content:"Mozilla/4.0 (compatible|3B| MSIE 6.1|3B| Windows XP)"; startswith;
    reference:md5,693c007d651bb5a8c6d2a4f5ed65a69c;
    classtype:command-and-control;
    sid:2019827; rev:3;
    metadata:attack_target Client_Endpoint, created_at 2014_12_01, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_05_14, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)