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<?php
/**
* @copyright Copyright (c) 2017 Matthias Held <matthias.held@uni-konstanz.de>
* @author Matthias Held <matthias.held@uni-konstanz.de>
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
namespace OCA\RansomwareDetection\tests\Unit;
use OCA\RansomwareDetection\Monitor;
use OCA\RansomwareDetection\Analyzer\EntropyResult;
use OCA\RansomwareDetection\Analyzer\FileNameResult;
use OCA\RansomwareDetection\Classifier;
use OCA\RansomwareDetection\Db\FileOperationMapper;
use OCA\RansomwareDetection\Service\FileOperationService;
use OCA\RansomwareDetection\Db\FileOperation;
use OCP\ILogger;
use Test\TestCase;
class ClassifierTest extends TestCase
{
/** @var ILogger|\PHPUnit_Framework_MockObject_MockObject */
protected $logger;
/** @var FileOperationMapper|\PHPUnit_Framework_MockObject_MockObject */
protected $fileOperationMapper;
/** @var FileOperationService|\PHPUnit_Framework_MockObject_MockObject */
protected $fileOperationService;
/** @var Classifier */
protected $classifier;
public function setUp()
{
parent::setUp();
$this->logger = $this->createMock(ILogger::class);
$this->fileOperationMapper = $this->createMock(FileOperationMapper::class);
$this->fileOperationService = $this->createMock(FileOperationService::class);
$this->classifier = new Classifier($this->logger, $this->fileOperationMapper, $this->fileOperationService);
}
public function dataClassifyFile()
{
return [
['command' => Monitor::WRITE, 'fileClass' => EntropyResult::ENCRYPTED, 'fileNameClass' => FileNameResult::NORMAL, 'suspicionClass' => Classifier::NOT_SUSPICIOUS],
['command' => Monitor::WRITE, 'fileClass' => EntropyResult::ENCRYPTED, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_EXTENSION, 'suspicionClass' => Classifier::MIDDLE_LEVEL_OF_SUSPICION],
['command' => Monitor::WRITE, 'fileClass' => EntropyResult::ENCRYPTED, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_NAME, 'suspicionClass' => Classifier::MIDDLE_LEVEL_OF_SUSPICION],
['command' => Monitor::WRITE, 'fileClass' => EntropyResult::ENCRYPTED, 'fileNameClass' => FileNameResult::SUSPICIOUS, 'suspicionClass' => Classifier::HIGH_LEVEL_OF_SUSPICION],
['command' => Monitor::WRITE, 'fileClass' => EntropyResult::COMPRESSED, 'fileNameClass' => FileNameResult::NORMAL, 'suspicionClass' => Classifier::NOT_SUSPICIOUS],
['command' => Monitor::WRITE, 'fileClass' => EntropyResult::COMPRESSED, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_EXTENSION, 'suspicionClass' => Classifier::LOW_LEVEL_OF_SUSPICION],
['command' => Monitor::WRITE, 'fileClass' => EntropyResult::COMPRESSED, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_NAME, 'suspicionClass' => Classifier::LOW_LEVEL_OF_SUSPICION],
['command' => Monitor::WRITE, 'fileClass' => EntropyResult::COMPRESSED, 'fileNameClass' => FileNameResult::SUSPICIOUS, 'suspicionClass' => Classifier::MIDDLE_LEVEL_OF_SUSPICION],
['command' => Monitor::WRITE, 'fileClass' => EntropyResult::NORMAL, 'fileNameClass' => FileNameResult::NORMAL, 'suspicionClass' => Classifier::NOT_SUSPICIOUS],
['command' => Monitor::WRITE, 'fileClass' => EntropyResult::NORMAL, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_EXTENSION, 'suspicionClass' => Classifier::NOT_SUSPICIOUS],
['command' => Monitor::WRITE, 'fileClass' => EntropyResult::NORMAL, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_NAME, 'suspicionClass' => Classifier::NOT_SUSPICIOUS],
['command' => Monitor::WRITE, 'fileClass' => EntropyResult::NORMAL, 'fileNameClass' => FileNameResult::SUSPICIOUS, 'suspicionClass' => Classifier::NOT_SUSPICIOUS],
['command' => Monitor::READ, 'fileClass' => EntropyResult::ENCRYPTED, 'fileNameClass' => FileNameResult::NORMAL, 'suspicionClass' => Classifier::NO_INFORMATION],
['command' => Monitor::READ, 'fileClass' => EntropyResult::ENCRYPTED, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_EXTENSION, 'suspicionClass' => Classifier::NO_INFORMATION],
['command' => Monitor::READ, 'fileClass' => EntropyResult::ENCRYPTED, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_NAME, 'suspicionClass' => Classifier::NO_INFORMATION],
['command' => Monitor::READ, 'fileClass' => EntropyResult::ENCRYPTED, 'fileNameClass' => FileNameResult::SUSPICIOUS, 'suspicionClass' => Classifier::NO_INFORMATION],
['command' => Monitor::READ, 'fileClass' => EntropyResult::COMPRESSED, 'fileNameClass' => FileNameResult::NORMAL, 'suspicionClass' => Classifier::NO_INFORMATION],
['command' => Monitor::READ, 'fileClass' => EntropyResult::COMPRESSED, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_EXTENSION, 'suspicionClass' => Classifier::NO_INFORMATION],
['command' => Monitor::READ, 'fileClass' => EntropyResult::COMPRESSED, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_NAME, 'suspicionClass' => Classifier::NO_INFORMATION],
['command' => Monitor::READ, 'fileClass' => EntropyResult::COMPRESSED, 'fileNameClass' => FileNameResult::SUSPICIOUS, 'suspicionClass' => Classifier::NO_INFORMATION],
['command' => Monitor::READ, 'fileClass' => EntropyResult::NORMAL, 'fileNameClass' => FileNameResult::NORMAL, 'suspicionClass' => Classifier::NO_INFORMATION],
['command' => Monitor::READ, 'fileClass' => EntropyResult::NORMAL, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_EXTENSION, 'suspicionClass' => Classifier::NO_INFORMATION],
['command' => Monitor::READ, 'fileClass' => EntropyResult::NORMAL, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_NAME, 'suspicionClass' => Classifier::NO_INFORMATION],
['command' => Monitor::READ, 'fileClass' => EntropyResult::NORMAL, 'fileNameClass' => FileNameResult::SUSPICIOUS, 'suspicionClass' => Classifier::NO_INFORMATION],
['command' => Monitor::DELETE, 'fileClass' => EntropyResult::ENCRYPTED, 'fileNameClass' => FileNameResult::NORMAL, 'suspicionClass' => Classifier::NOT_SUSPICIOUS],
['command' => Monitor::DELETE, 'fileClass' => EntropyResult::ENCRYPTED, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_EXTENSION, 'suspicionClass' => Classifier::MIDDLE_LEVEL_OF_SUSPICION],
['command' => Monitor::DELETE, 'fileClass' => EntropyResult::ENCRYPTED, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_NAME, 'suspicionClass' => Classifier::MIDDLE_LEVEL_OF_SUSPICION],
['command' => Monitor::DELETE, 'fileClass' => EntropyResult::ENCRYPTED, 'fileNameClass' => FileNameResult::SUSPICIOUS, 'suspicionClass' => Classifier::HIGH_LEVEL_OF_SUSPICION],
['command' => Monitor::DELETE, 'fileClass' => EntropyResult::COMPRESSED, 'fileNameClass' => FileNameResult::NORMAL, 'suspicionClass' => Classifier::NOT_SUSPICIOUS],
['command' => Monitor::DELETE, 'fileClass' => EntropyResult::COMPRESSED, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_EXTENSION, 'suspicionClass' => Classifier::LOW_LEVEL_OF_SUSPICION],
['command' => Monitor::DELETE, 'fileClass' => EntropyResult::COMPRESSED, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_NAME, 'suspicionClass' => Classifier::LOW_LEVEL_OF_SUSPICION],
['command' => Monitor::DELETE, 'fileClass' => EntropyResult::COMPRESSED, 'fileNameClass' => FileNameResult::SUSPICIOUS, 'suspicionClass' => Classifier::MIDDLE_LEVEL_OF_SUSPICION],
['command' => Monitor::DELETE, 'fileClass' => EntropyResult::NORMAL, 'fileNameClass' => FileNameResult::NORMAL, 'suspicionClass' => Classifier::NOT_SUSPICIOUS],
['command' => Monitor::DELETE, 'fileClass' => EntropyResult::NORMAL, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_EXTENSION, 'suspicionClass' => Classifier::NOT_SUSPICIOUS],
['command' => Monitor::DELETE, 'fileClass' => EntropyResult::NORMAL, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_NAME, 'suspicionClass' => Classifier::NOT_SUSPICIOUS],
['command' => Monitor::DELETE, 'fileClass' => EntropyResult::NORMAL, 'fileNameClass' => FileNameResult::SUSPICIOUS, 'suspicionClass' => Classifier::NOT_SUSPICIOUS],
['command' => Monitor::RENAME, 'fileClass' => EntropyResult::ENCRYPTED, 'fileNameClass' => FileNameResult::NORMAL, 'suspicionClass' => Classifier::NOT_SUSPICIOUS],
['command' => Monitor::RENAME, 'fileClass' => EntropyResult::ENCRYPTED, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_EXTENSION, 'suspicionClass' => Classifier::MIDDLE_LEVEL_OF_SUSPICION],
['command' => Monitor::RENAME, 'fileClass' => EntropyResult::ENCRYPTED, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_NAME, 'suspicionClass' => Classifier::MIDDLE_LEVEL_OF_SUSPICION],
['command' => Monitor::RENAME, 'fileClass' => EntropyResult::ENCRYPTED, 'fileNameClass' => FileNameResult::SUSPICIOUS, 'suspicionClass' => Classifier::HIGH_LEVEL_OF_SUSPICION],
['command' => Monitor::RENAME, 'fileClass' => EntropyResult::COMPRESSED, 'fileNameClass' => FileNameResult::NORMAL, 'suspicionClass' => Classifier::NOT_SUSPICIOUS],
['command' => Monitor::RENAME, 'fileClass' => EntropyResult::COMPRESSED, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_EXTENSION, 'suspicionClass' => Classifier::LOW_LEVEL_OF_SUSPICION],
['command' => Monitor::RENAME, 'fileClass' => EntropyResult::COMPRESSED, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_NAME, 'suspicionClass' => Classifier::LOW_LEVEL_OF_SUSPICION],
['command' => Monitor::RENAME, 'fileClass' => EntropyResult::COMPRESSED, 'fileNameClass' => FileNameResult::SUSPICIOUS, 'suspicionClass' => Classifier::MIDDLE_LEVEL_OF_SUSPICION],
['command' => Monitor::RENAME, 'fileClass' => EntropyResult::NORMAL, 'fileNameClass' => FileNameResult::NORMAL, 'suspicionClass' => Classifier::NOT_SUSPICIOUS],
['command' => Monitor::RENAME, 'fileClass' => EntropyResult::NORMAL, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_EXTENSION, 'suspicionClass' => Classifier::NOT_SUSPICIOUS],
['command' => Monitor::RENAME, 'fileClass' => EntropyResult::NORMAL, 'fileNameClass' => FileNameResult::SUSPICIOUS_FILE_NAME, 'suspicionClass' => Classifier::NOT_SUSPICIOUS],
['command' => Monitor::RENAME, 'fileClass' => EntropyResult::NORMAL, 'fileNameClass' => FileNameResult::SUSPICIOUS, 'suspicionClass' => Classifier::NOT_SUSPICIOUS],
];
}
/**
* @dataProvider dataClassifyFile
*
* @param int $command
* @param int $fileClass
* @param int $fileNameClass
* @param int $suspicionClass
*/
public function testClassifyFile($command, $fileClass, $fileNameClass, $suspicionClass)
{
$fileOperation = new FileOperation();
$fileOperation->setCommand($command);
$fileOperation->setFileClass($fileClass);
$fileOperation->setFileNameClass($fileNameClass);
$result = $this->classifier->classifyFile($fileOperation);
$this->assertEquals($result->getSuspicionClass(), $suspicionClass);
}
}
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