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  • 2017
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  • A new project called “ShieldFS” can stop Ransomware attacks

A new project called “ShieldFS” can stop Ransomware attacks

July 29, 2017July 27, 2019 Comments Off on A new project called “ShieldFS” can stop Ransomware attacks
block ransomware encryptions shieldfs

Italian security researchers at NECSTLab have developed a new project called “ShieldFS”, which is Windows drop-in driver and custom filesystem that is able to detect and recognize the signs of a ransomware attack, stop any malicious activities and can also return any encrypted files to the original state.

According to NECST:
“ShieldFS is an innovative solution to fight ransomware attacks. It automatically creates detection models that distinguish ransomware from benign processes at runtime on the base of the filesystem activity. “

It is a complicated mechanism created to detect Copy-On-Write (COW) processes. COW processes occur when an application uses a file, copies it, makes changes, and then replaces the original file. Most ransomware families depend on “COW” processes by using an initial file, encrypting its content, and replacing the original.

Also read – Anatomy of a ransomware attack and how it actually encrypts your files.

The project is also created to look for the use of symmetric crypto primitives, usually used in the file encryption process. Once ShieldFS identifies an event that meets these rules, it checks with internal behavioral models that distinguish benign processes from malicious ransomware.

“ShieldFS looks for indicators of the use of cryptographic primitives. In particular, ShieldFS scans the memory of any process considered as potentially malicious, searching for traces of the typical block cipher key schedules.”

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