Network Attached Storage devices are becoming popular in homes and small businesses. Compared to regular PC servers, they are inexpensive, consume less electricity, and are easier to maintain even for regular users.
NAS devices use RAIDs of various types for fault tolerance and data retention. Many manufacturers of NAS offer their users their RAID management systems, which can combine different hard drives into complex RAID systems.
Such schemes allow home or SME users to use the extra disks efficiently, but they have one drawback: when it comes to data recovery, it is not very clear what to do with such systems.
NAS Encryption Virus Attack Recovery
After the encryption ends, some delete the encryption key, and others demand a paying a ransom. But not all users who pay the ransomware attacker get the encryption key.
Recently, our team received a data recovery request for NAS. The client had a small business running, and all his backups and customer lists were stored on the device. The network-attached storage had two Western Digital hard drives. He complained that his data stored on these drives had become inaccessible, and the operating system showed the files as encrypted. After consulting with our dedicated customer services, the client decided to proceed with our data recovery process.
Our skilled experts received the NAS device and started diagnostics. They found out that the hacker used the SQL injection method to access his database and view, modify, add, delete data, and write and download local files.
Network-Attached System Firewall Failure
In this case, our data recovery specialists restore the system’s initial state and eliminate the virus. The engineer deleted all the virus files using our self-designed decryption tools designed for such kinds of virus attacks. Then they restored the firewall of the network storage.
The firewall started properly filtering data packets by headers and set a session-wide gateway between the recipient and sender of the packet.
In addition, the firewall rules can determine which software is trying to access the Internet and block its IP address. Most modern firewalls are capable of operating in learning mode, allowing the user to set the network policy for all programs attempting to access the Internet.
Most commercial NAS devices are different from conventional ones: very often, they use processors that are not compatible with Intel devices, they do not have video outputs, and it is impossible to connect a keyboard and mouse to them.
Therefore, running any data recovery program directly on them is impossible. So, disks will need to be removed from such devices and shipped to a data restoration company.
NFS Data Recovery
After the firewall was established, the next step was to decrypt files that the virus damaged. Our engineers analyzed the documents, and they could not find the encryption key as it was deleted.
A cryptographic key is a special set of data that is used to encrypt and decrypt information sent over a network. Crypto keys are used to determine authentication codes and verify electronic digital signatures. Our engineers having years of experience in the industry, easily restored the key and decrypted all the files.
As the virus also damaged the file system, our data restoration technicians assembled the file catalogs and finalized the case.
The Network File System provides storage for files on a network. NFS is a distributed file system. It provides users with access to files located on remote computers and allows them to work with these files in the same way as with local ones.
Our engineers restored the file system, and a remote file verification for the client was provided. He approved the results, and we shipped his media storage back.
PITS Global Data Recovery Services offers highly secure and confidential data recovery solutions for network-attached storage devices.
Our highly skilled technicians can remove all viruses, including ransomware types. They safely decrypt all lost files and recover data from media storage. ISO/IEC 9001:2015 certification proves that all services our company provide are high level and designed to meet our customers’ expectations.