Insalling
Download file MADLIRA.7z and decompress it.

Installed Data:

• MADLIRA.jar is the main application.
• noAPI.txt declares the prefix of APIs.
• family.txt lists malwares by family.
• Folder TrainData contains the training configuration and training model.
• Folder Samples contains sample data.
• Folder TempData contains data for kernel computation.

Functionality
This tool have two main components: TFIDF component and SVM component.

TFIDF component

Command: MADLIRA TFIDF

For this component, there are two functions: the training function (Malicious behavior extraction) and the test function (Malicious behavior detection)

Malicious behavior extraction

• Collect benign applications and malicious applications and oput them in folders named benginAPKFolder and maliciousApkFolder, respectively.
• Prepare training data and pack them in two files named benignPack and maliciousPack by using the command:

MADLIRA TFIDF packAPK -PB benignApkFolder -B benignPack -PM maliciousApkFolder -M maliciousPack

• Extracting malicious behaviors from two packed files (benignPack and maliciousPack) by using the command:

MADLIRA TFIDF train -B benignPack -M maliciousPack

Malicious behavior detection

• Collect new applications and put them in a folder named checkApk.
• Detect malicious behaviors of applications in the folder checkApk by using the command:

MADLIRA TFIDF check -S checkApk

Command:

MADLIRA TFIDF train <Options>
         Compute the malicious specifications for given training data.
                 -B <filename>: the archive file contains all graphs of training benwares.
                 -M <filename>: the archive file contains all categories of training malwares.
 
 MADLIRA TFIDF check <Options>
         Check malicious behaviors in the given applications in a folder.
                 -S <folder>: the folder contains all applications (apk files).
 
 MADLIRA TFIDF test <Options>
         Test the classifier for a given test data.
                 -S <folder>: the folder contains all graphs for testing.
 
 MADLIRA TFIDF clear
         Clean all training data.
 
 MADLIRA TFIDF install
         Clean old training data and install a new data for training.
                 -B <filename>: the archive file contains all graphs of training benwares.
                 -M <filename>: the archive file contains all categories of training malwares.
 

Examples:
Training new data:

• First collect training applications (APK files) and store them in folders named MalApkFolder and BenApkFolder.
• Pack training applications into archive files named MalPack and BenPack by using this command:

MADLIRA TFIDF packAPK -PB BenApkFolder -B BenPack -PM MalApkFolder -M MalPack

• Clean old training data:

MADLIRA TFIDF clear

• Compute the malicious graphs from the training packs (BenPack and MalPack)

MADLIRA TFIDF train -B BenPack -M MalPack

Checking new applications:

• put these applications in a folder named checkApk and use this command:

MADLIRA TFIDF check -S checkApk

Output:


SVM component

Command: MADLIRA SVM

For this component, there are two functions: the training function and the test function.

Training phase

• Collect benign applications in a folder named benignApkFolder and malicious applications in a folder named maliciousApkFolder.
• Prepare training data by using the commands:

MADLIRA SVM packAPK -PB benignApkFolder -B benignPack -PM maliciousApkFolder -M maliciousPack

• Compute the training model by this command:

MADLIRA SVM train -B benignPack -M maliciousPack

Malicious behavior detection

• Collect new applications and put them in a folder named checkApk
• Detect malicious behaviors of applications in the folder checkApk by using the command:

MADLIRA SVM check -S checkApk

Command:

MADLIRA SVM train <Options>
         Compute the classifier for given training data.
                 -T <T>: max length of the common walks (default value = 3).
                 -l <lambda>: lambda value to control the importance of length of walks (default value = 0.4).
                 -B <filename>: the archive file contains all graphs of training benwares.
                 -M <filename>: the archive file contains all graphs of training malwares.
 
 MADLIRA SVM check <Options>
         Check malicious behaviors in the applications in a folder.
                 -S <foldername>: the folder contains all apk files.
 
 MADLIRA SVM test <Options>
         Test the classifier for given graph data.
                 -S <foldername>: the folder contains all graphs of test data.
                 -n <n>: the number of test samples.
 
 MADLIRA SVM clear
         Clean all training data.

Packages:
This tool uses the following packages:

• apktool-2.2.1 (https://ibotpeaches.github.io/Apktool/)
• ojalgo-41.0.0 (https://github.com/optimatika/ojAlgo)
• libsvm (http://www.csie.ntu.edu.tw/~cjlin/libsvm/)

References

• Khanh Huu The Dam and Tayssir Touili. Extracting Android Malicious Behaviors. In Proceedings of ForSE 2017
• Khanh Huu The Dam and Tayssir Touili. Learn Android malware. In Proceedings of [email protected] 2017