1. 3. This type of ransomware are believed to

1.  These kind of Ransomware
attacks can be called Denial of Service Attacks since the legitimate user is
deprived of working over his files or performing any other activities till a
particular code is texted to an SMS provider who charges the user with high-end
rates. Sometimes the attack comes as if its from some legal authorities or from
the user’s OS operators. Victim can be asked to pay via online payment systems.
These kind of attacks do not generally damage the files inside the system.
Below is the image of one such kind of ransomware that we developed. 

2. Another type of Ransomwares are the ones that might or might not lock
access to the system but will encrypt all personal/vital and important data.
Since the malware is made of complicated encryption algorithms, it’s difficult
to decrypt them and retain the access without paying to the attacker hefty
amounts of ransom to obtain the decryption key. They might delete files.

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3. This type of ransomware are believed to be most dangerous, because
in addition to the above to damages, it also infects the booting mechanism of
an operating system. The victim then follows the instructions that the Ransom
note provides on switching on the system.

When these types of malware enter into a device, it is often difficult
to detect them and respond well in time since there are a good no. of upgraded
and differentiated variants that come into existence every day each of which
portray different behavior, thus making it difficult to design a tool that
could resist something that changes its characteristics rapidly and behaves
differently every time. Moreover it is difficult to differentiate them from
other safe soft wares that sometimes would behave the way a ransomware
infection would. In our work, the focus is on detecting the files causing the
first and second type of Ransomware attacks.

Therefore, in this work
contribution has been made towards:

1. Identifying four indicators: 
All these indicators were identified on the basis ransomware behavior to
a system containing files. Each of these indicators were designed to analyze
particular conduct in terms of finding destructive content from target
files/source codes or analyzing the type of files. Other indicators aim to keep
a check on data integrity, uncommon read/write behaviors and file deletions.
Each of these indicators will be explained in the next section.

2. Protect from unseen malware attacks: Because of using more dynamic
techniques of Machine Learning, its classification and prediction models, it is
easier now to immediately detect any type of malware that the system has not
experienced before.

3. Minimizing the amount of data loss: All these indicators when made
to work together, they will be able to alert the user at the early stage of annoying
activities that come in existence and also of whose causing that to the system.

4. Safely differentiate between benign and
harmful files: After the files are checked for harmful content or destructing
actions on the user’s file system, which trigger these indications accordingly,
the files can be further analyzed into ‘safe’ or ‘unsafe’ category by using
classification algorithm (Hypothesis testing) and giving the control to the
user to review its contents before classifying each file.