ET MOBILE_MALWARE Android/xDrop Ransomware CnC Checkin

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MOBILE_MALWARE Android/xDrop Ransomware CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"slave.php"; endswith;
    http.user_agent;
    content:"Apache-HttpClient/UNAVAILABLE ("; startswith; fast_pattern;
    http.request_body;
    content:"username="; startswith;
    content:"&password="; distance:0;
    http.header_names;
    content:!"Referer";
    content:!"Accept";
    reference:md5,f154d5596ecb8f63de1e7319e31ad369;
    classtype:command-and-control;
    sid:2030243; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_06_03, deployment Perimeter, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_06_03, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;
)