The program can then start encrypting all documents the user has access to by generating a random symmetric encryption key for each file, encrypt the file with this key and add at the end of the file the encryption key encrypted with the public asymmetric key.
The private key is kept on the attacker server while the public key is stored on the victim’s computer. The program will then contact a remote server owned by the attackers where an asymmetric encryption key pair is generated. Through a security exploit or flaw, malicious code is then launched which allows to download and install a program on the victim’s machine. Let’s start by explaining how exactly ransomware works.Īn encrypting ransomware will typically come via an email attachment, which is opened by the victim – an unwitting company employee. So if you’re interested in using FileAudit to protect against ransomware, read on! How does encrypting ransomware work? Given the surge in interest, I wanted to answer some of those questions.įileAudit plays a strong role in protecting a network against these kinds of attacks, so the following provides an overview of best practice in usage as well as a practical test encryption, including the results. According to the FBI, ransomware – the strain of malware whereby files and folders are locked down by criminals and not released until a ransom is paid – is a growing concern. This, coupled with the new mass access alerts with FileAudit, has triggered many questions from both customers and prospects on how to detect these attacks with FileAudit.
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