Microsoft Windows Defender AV: Configure monitoring for incoming and outgoing file and program activity

##############################################################################
# OpenVAS Vulnerability Test
# $Id: win_av_realtime_scan_direction.nasl 11495 2018-09-20 10:06:25Z emoss $
#
# Check value for Configure monitoring for incoming and outgoing file and
# program activity
#
# Authors:
# Emanuel Moss <[email protected]>
#
# Copyright:
# Copyright (c) 2018 Greenbone Networks GmbH, http://www.greenbone.net
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# (or any later version), as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
###############################################################################

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.109624");
  script_version("$Revision: 11495 $");
  script_tag(name:"last_modification", value:"$Date: 2018-09-20 12:06:25 +0200 (Thu, 20 Sep 2018) $");
  script_tag(name:"creation_date", value:"2018-09-19 14:32:34 +0200 (Wed, 19 Sep 2018)");
  script_tag(name:"cvss_base", value:"0.0");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:H/Au:S/C:N/I:N/A:N");
  script_tag(name:"qod", value:"97");
  script_name('Microsoft Windows Defender AV: Configure monitoring for incoming and outgoing file and program activity');
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (c) 2018 Greenbone Networks GmbH");
  script_family("Policy");
  script_dependencies("smb_reg_service_pack.nasl");
  script_add_preference(name:"Value", type:"radio", value:"0;1;2");
  script_mandatory_keys("Compliance/Launch");
  script_tag(name:"summary", value:"This test checks the setting for policy 'Configure monitoring
for incoming and outgoing file and program activity' on Windows hosts.

The policy setting allows to configure monitoring for incoming and outgoing files, without having to
turn off monitoring entirely. It is recommended for use on servers where there is a lot of incoming
and outgoing file activity but for performance reasons need to have scanning disabled for a
particular scan direction. The appropriate configuration should be evaluated based on the server role.
Note that the configuration is only honored for NTFS volumes. For any other file system type, full
monitoring of file and program activity will be present on those volumes.");
  exit(0);
}

include("smb_nt.inc");
include("policy_functions.inc");

if(!get_kb_item("SMB/WindowsVersion")){
  policy_logging(text:'Host is no Microsoft Windows System or it is not possible
to query the registry.');
  exit(0);
}

if(get_kb_item("SMB/WindowsVersion") < "6.1"){
  policy_logging(text:'Host is not at least a Microsoft Windows 7 system.
Older versions of Microsoft Windows are not supported any more.
Please update the system.');
  exit(0);
}

title = 'Configure monitoring for incoming and outgoing file and program activity';
fixtext = 'Set following UI path accordingly:
Computer Configuration/Administrative Templates/Windows Components/Windows Defender Antivirus/Real-time
Protection/' + title;
type = 'HKLM';
key = 'Software\\Policies\\Microsoft\\Windows Defender\\Real-Time Protection';
item = 'RealtimeScanDirection';
default = script_get_preference('Value');
value = registry_get_dword(key:key, item:item, type:type);

if(value == ''){
  value = '0';
}

if(value == default){
  compliant = 'yes';
}else{
  compliant = 'no';
}

policy_logging(text:'"' + title + '" is set to: ' + value);
policy_add_oid();
policy_set_dval(dval:default);
policy_fixtext(fixtext:fixtext);
policy_control_name(title:title);
policy_set_kb(val:value);
policy_set_compliance(compliant:compliant);

exit(0);