|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* @copyright Copyright (c) 2019 Matthias Held <[email protected]> |
|
4
|
|
|
* @author Matthias Held <[email protected]> |
|
5
|
|
|
* @license GNU AGPL version 3 or any later version |
|
6
|
|
|
* |
|
7
|
|
|
* This program is free software: you can redistribute it and/or modify |
|
8
|
|
|
* it under the terms of the GNU Affero General Public License as |
|
9
|
|
|
* published by the Free Software Foundation, either version 3 of the |
|
10
|
|
|
* License, or (at your option) any later version. |
|
11
|
|
|
* |
|
12
|
|
|
* This program is distributed in the hope that it will be useful, |
|
13
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
14
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
15
|
|
|
* GNU Affero General Public License for more details. |
|
16
|
|
|
* |
|
17
|
|
|
* You should have received a copy of the GNU Affero General Public License |
|
18
|
|
|
* along with this program. If not, see <https://www.gnu.org/licenses/>. |
|
19
|
|
|
*/ |
|
20
|
|
|
|
|
21
|
|
|
namespace OCA\RansomwareDetection\Service; |
|
22
|
|
|
|
|
23
|
|
|
use OCA\RansomwareDetection\AppInfo\Application; |
|
24
|
|
|
use OCA\RansomwareDetection\Model\Detection; |
|
25
|
|
|
use OCA\RansomwareDetection\Model\DetectionDeserializer; |
|
26
|
|
|
use OCA\RansomwareDetection\Classifier; |
|
27
|
|
|
use OCA\RansomwareDetection\Analyzer\SequenceAnalyzer; |
|
28
|
|
|
use OCP\IConfig; |
|
|
|
|
|
|
29
|
|
|
use OCP\ILogger; |
|
|
|
|
|
|
30
|
|
|
|
|
31
|
|
|
class DetectionService { |
|
32
|
|
|
|
|
33
|
|
|
/** @var ILogger */ |
|
34
|
|
|
protected $logger; |
|
35
|
|
|
|
|
36
|
|
|
/** @var FileOperationService */ |
|
37
|
|
|
protected $service; |
|
38
|
|
|
|
|
39
|
|
|
/** @var DetectionDeserializer */ |
|
40
|
|
|
protected $deserializer; |
|
41
|
|
|
|
|
42
|
|
|
/** @var IConfig */ |
|
43
|
|
|
protected $config; |
|
44
|
|
|
|
|
45
|
|
|
/** @var Classifier */ |
|
46
|
|
|
protected $classifier; |
|
47
|
|
|
|
|
48
|
|
|
/** @var string */ |
|
49
|
|
|
protected $userId; |
|
50
|
|
|
|
|
51
|
|
|
/** |
|
52
|
|
|
* @param ILogger $logger |
|
53
|
|
|
* @param FileOperationService $service |
|
54
|
|
|
* @param IConfig $config |
|
55
|
|
|
* @param Classifier $classifier |
|
56
|
|
|
* @param SequenceAnalyzer $sequenceAnalyzer |
|
57
|
|
|
* @param string $userId |
|
58
|
|
|
*/ |
|
59
|
|
|
public function __construct( |
|
60
|
|
|
ILogger $logger, |
|
61
|
|
|
FileOperationService $service, |
|
62
|
|
|
DetectionDeserializer $deserializer, |
|
63
|
|
|
IConfig $config, |
|
64
|
|
|
Classifier $classifier, |
|
65
|
|
|
SequenceAnalyzer $sequenceAnalyzer, |
|
66
|
|
|
$userId |
|
67
|
|
|
) |
|
68
|
|
|
{ |
|
69
|
|
|
$this->logger = $logger; |
|
70
|
|
|
$this->service = $service; |
|
71
|
|
|
$this->deserializer = $deserializer; |
|
72
|
|
|
$this->config = $config; |
|
73
|
|
|
$this->classifier = $classifier; |
|
74
|
|
|
$this->sequenceAnalyzer = $sequenceAnalyzer; |
|
|
|
|
|
|
75
|
|
|
$this->userId = $userId; |
|
76
|
|
|
} |
|
77
|
|
|
|
|
78
|
|
|
public function getDetections() { |
|
79
|
|
|
$files = $this->service->findAll(); |
|
80
|
|
|
|
|
81
|
|
|
$sequences = array(); |
|
82
|
|
|
$detectionObjects = array(); |
|
83
|
|
|
|
|
84
|
|
|
// Classify files and put together the sequences. |
|
85
|
|
|
foreach ($files as $file) { |
|
86
|
|
|
$this->classifier->classifyFile($file); |
|
87
|
|
|
$sequences[$file->getSequence()][] = $file; |
|
88
|
|
|
} |
|
89
|
|
|
|
|
90
|
|
|
foreach ($sequences as $id => $sequence) { |
|
91
|
|
|
if (sizeof($sequence) >= $this->config->getAppValue(Application::APP_ID, 'minimum_sequence_length', 0)) { |
|
92
|
|
|
usort($sequence, function ($a, $b) { |
|
93
|
|
|
return $b->getId() - $a->getId(); |
|
94
|
|
|
}); |
|
95
|
|
|
$result = $this->sequenceAnalyzer->analyze($id, $sequence); |
|
96
|
|
|
$this->logger->debug('detection: suspicion score of sequence ' . $id . ' is ' . $result->getSuspicionScore() . '.', array('app' => Application::APP_ID)); |
|
97
|
|
|
if ($result->getSuspicionScore() >= 0.5) { |
|
98
|
|
|
$detection = new Detection($id, $sequence); |
|
99
|
|
|
array_push($detectionObjects, $detection); |
|
100
|
|
|
} |
|
101
|
|
|
} |
|
102
|
|
|
} |
|
103
|
|
|
usort($detectionObjects, function ($a, $b) { |
|
104
|
|
|
return $b->getId() - $a->getId(); |
|
105
|
|
|
}); |
|
106
|
|
|
return $detectionObjects; |
|
107
|
|
|
} |
|
108
|
|
|
|
|
109
|
|
|
public function getDetection($id) { |
|
|
|
|
|
|
110
|
|
|
return DetectionSerializer::deserialize(json_decode(new Detection(1, array()))); |
|
|
|
|
|
|
111
|
|
|
} |
|
112
|
|
|
} |
undo-ransomware /
ransomware_detection
Loading history...
The issue could also be caused by a filter entry in the build configuration. If the path has been excluded in your configuration, e.g.
excluded_paths: ["lib/*"], you can move it to the dependency path list as follows:For further information see https://scrutinizer-ci.com/docs/tools/php/php-scrutinizer/#list-dependency-paths