ET MALWARE Win32/HydraCrypt CnC Beacon 1

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/HydraCrypt CnC Beacon 1";
    flow:established,to_server;
    urilen:11;
    http.method;
    content:"GET";
    http.uri;
    content:"/flamme.php"; fast_pattern;
    http.header;
    content:"Cache-Control|3a 20|no-cache";
    http.header_names;
    content:"|0d 0a|Host|0d 0a|Connection|0d 0a|Cache-Control|0d 0a 0d 0a|"; startswith;
    http.connection;
    content:"Keep-Alive"; bsize:10;
    classtype:command-and-control;
    sid:2022495; rev:4;
    metadata:attack_target Client_Endpoint, created_at 2016_02_08, deployment Perimeter, malware_family Win32_HydraCrypt, confidence High, signature_severity Major, tag c2, updated_at 2020_10_05, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)