private static void react(FileSystemEventArgs e)
{
threshold.Add(DateTime.Now);
List <DateTime> temp = new List <DateTime>();
DateTime now = DateTime.Now;
foreach (DateTime t in threshold)
{
if (secondsInThreshold < (now.Subtract(t).Seconds))
{
temp.Add(t);
}
}
foreach (DateTime t in temp)
{
threshold.Remove(t);
}
if (threshold.Count > thresholdToReaction)
{
if (!hasMadeFirstDetection)
{
hasMadeFirstDetection = true;
firstDetected = DateTime.Now;
}
Console.WriteLine("File: " + e.FullPath + " has been " + e.ChangeType + " and the responsible process will now pay the ultimate price!");
ActionTaker.shannonReaction(e.FullPath);
}
}
public static void shannonEntropyFileMonDetection()
{
//Get name of ransomware
Logger.getPoCRansomware();
Thread.Sleep(1000);
//Post name to server that the ransomware has been fetched
Logger.postPoCFetched();
//Wait for the server to respond
while (!Logger.getHasFetched())
{
Thread.Sleep(500);
}
//Initialize variables
Logger.setRansomwareDownloaderPath(RANSOMWAREDOWNLOADERPATH);
ActionTaker.setBackingName(BACKINGNAME);
ActionTaker.setPathToBackingFile(pathToBackingFile);
ProcMon.setPathToProcMon(ProcMonPath);
FilemonEventHandler.setEntropyThreshold(entropyThreshold);
FilemonEventHandler.setThresholdToReaction(thresholdToReaction);
FilemonEventHandler.setSecondsInThreshold(secondsInThreshold);
Logger.setPath1(path1);
Logger.setPath2(path2);
Logger.setPath3(path3);
Logger.setPath4(path4);
Logger.setPathFileWatch(PATH);
//Find entropy of all files
ShannonEntropy temp1 = new ShannonEntropy();
temp1.getEntropyOfAllFilesInPath(path1);
ShannonEntropy temp2 = new ShannonEntropy();
temp2.getEntropyOfAllFilesInPath(path2);
ShannonEntropy temp3 = new ShannonEntropy();
temp3.getEntropyOfAllFilesInPath(path3);
ShannonEntropy temp4 = new ShannonEntropy();
temp4.getEntropyOfAllFilesInPath(path4);
//Print the entropies
Dictionary <string, double> test = ShannonEntropy.getSavedEntropies();
foreach (var item in test)
{
Console.WriteLine(item.Key + " - " + item.Value);
}
//Start procmon
BACKINGNAME = BACKINGNAME + 0;
var t = new Thread(() => ProcMon.createProcmonBackingFile(pathToBackingFile, BACKINGNAME));
t.Start();
//Start filemon
//When filemon sees a reaction it posts to filemoneventhandler
//Filemoneventhandler then deems if it is nessesary to take action, using actiontaker
Console.WriteLine(Logger.getNAMEONTEST());
//Start logger
Logger.LogWriter(PATH);
//Post to server that it has been tested
Logger.postPoCTested();
//Post to server the results
Logger.postPoCPosted();
Thread.Sleep(30000);
}