How to remove AttackSystem Ransomware and decrypt .attacksystem files

What is AttackSystem Ransomware

AttackSystem is a ransomware infection that has file-encrypting capabilities. This means that after getting infected by it victims will be restricted from accessing their own data until a ransom payment is made. In addition, the ransomware also alters the file appearance by adding the .attacksystem extension. For instance, a file previously named 1.pdf will change to something like 1.pdf.attacksystem and become no longer usable. Information on how to return the blocked data provided by swindlers in the How_to_back_files.html file that gets created after encryption. It is also worth noting that AttackSystem Ransomware has been discovered to belong to another malware family known as MedusaLocker.

The ransom message immediately warns against trying any manual modifications or third-party decryption tools as it is likely to permanently corrupt the data. It then continues by saying that all sensitive and personal data has been collected and will be released to online resources unless victims pay money to extortionists. To find out the price and buy the decryption service, victims are instructed to create a new email address on protonmail.com and write to one of the attached e-mail addresses. Should victims fail to establish contact within 72 hours, the price for decryption is said to increase. Unfortunately, it is usually impossible to decrypt data without the help of initial ransomware developers. In some cases when there are major vulnerabilities in a ransomware infection it is possible to decrypt data using third-party tools without risking damaging the configuration of files or failing decryption. However, no such universal tool is known to have such capabilities with regard to AttackSystem Ransomware at the moment. You can give a try to some third-party decryption/recovery tools from our guide below, however, there is a high probability of reaching no success due to the aforementioned.

Therefore, the best way you can recover access to data is by using a backup. If such is available, you can simply delete the ransomware and replace encrypted files with their healthy and usable copies. Alas, the risk of data publication will still be in place and cybercriminals may indeed release it to dark web resources. If you decide to ignore cybercriminals and choose your own path of recovery, make sure to delete the infection from your computer. In case of collaborating with the attackers, it will also be necessary to delete the infection from your computer so that it does not run its malicious activity again. Follow our guide to perform complete AttackSystem Ransomware removal and explore third-party decryption alternatives.

How AttackSystem Ransomware infected your computer

The way in which ransomware infiltrates systems varies depending on the victim and their exposure to different distribution channels. The most common methods of infiltration include spam emails with phishing links, trojans, fake software updates or installers, backdoors, keyloggers, botnets, system exploits, and other similar methods. These channels usually target users who can be easily tricked into downloading malicious attachments or links. Cybercriminals often include infected files in spam emails, making them appear as if they were legitimate messages from companies such as banks, delivery firms, tax authorities, or other genuine entities. Users are often encouraged to open phishing links or attachments with extensions such as .DOCX, .XLSX, .PDF, .EXE, .ZIP, .RAR, or .JS under suspicious claims on their “importance” or “unpostponable urgency”. Unfortuantely, opening such attachments involves a huge risk to open the door for some infection (like AttackSystem Ransomware).

You should also be careful while receiving some random content that looks suspicious. Unless you are sure it is safe and from a genuinely trustworthy sender, better ignore such messages or even delete them completely. Also, it is highly advised to avoid downloading software from unofficial or unverified resources, particularly those that host pirated or cracked repacks of software. Read our guide below to get access to useful protection tools that will shield your computer against such and other threats in the future.

1. Download AttackSystem Ransomware Removal Tool
2. Get decryption tool for .attacksystem files
3. Recover encrypted files with Stellar Data Recovery Professional
4. Restore encrypted files with Windows Previous Versions
5. Restore files with Shadow Explorer
6. How to protect from threats like AttackSystem Ransomware

AttackSystem Ransomware files:


How_to_back_files.html
{randomname}.exe


AttackSystem Ransomware registry keys:

no information

How to decrypt and restore .attacksystem files

Use automated decryptors

Download Kaspersky RakhniDecryptor

Use following tool from Kaspersky called Rakhni Decryptor, that can decrypt .attacksystem files. Download it here:

There is no purpose to pay the ransom because there is no guarantee you will receive the key, but you will put your bank credentials at risk.

Dr.Web Rescue Pack

Famous antivirus vendor Dr. Web provides free decryption service for the owners of its products: Dr.Web Security Space or Dr.Web Enterprise Security Suite. Other users can ask for help in the decryption of .attacksystem files by uploading samples to Dr. Web Ransomware Decryption Service. Analyzing files will be performed free of charge and if files are decryptable, all you need to do is purchase a 2-year license of Dr.Web Security Space worth $120 or less. Otherwise, you don’t have to pay.

If you are infected with AttackSystem Ransomware and removed from your computer you can try to decrypt your files. Antivirus vendors and individuals create free decryptors for some crypto-lockers. To attempt to decrypt them manually you can do the following:

Use Stellar Data Recovery Professional to restore .attacksystem files

1. Download Stellar Data Recovery Professional.
2. Click Recover Data button.
3. Select type of files you want to restore and click Next button.
4. Choose location where you would like to restore files from and click Scan button.
5. Preview found files, choose ones you will restore and click Recover.

Using Windows Previous Versions option:

1. Right-click on infected file and choose Properties.
2. Select Previous Versions tab.
3. Choose particular version of the file and click Copy.
4. To restore the selected file and replace the existing one, click on the Restore button.
5. In case there is no items in the list choose alternative method.

Using Shadow Explorer:

1. Download Shadow Explorer program.
2. Run it and you will see screen listing of all the drives and the dates that shadow copy was created.
3. Select the drive and date that you want to restore from.
4. Right-click on a folder name and select Export.
5. In case there are no other dates in the list, choose alternative method.

If you are using Dropbox:

1. Login to the DropBox website and go to the folder that contains encrypted files.
2. Right-click on the encrypted file and select Previous Versions.
3. Select the version of the file you wish to restore and click on the Restore button.

How to protect computer from viruses, like AttackSystem Ransomware , in future

1. Get special anti-ransomware software

Use ZoneAlarm Anti-Ransomware

ZoneAlarm Anti-Ransomware Dashboard

ZoneAlarm Anti-Ransomware Alert

ZoneAlarm Anti-Ransomware Blocked

Famous antivirus brand ZoneAlarm by Check Point released a comprehensive tool, that will help you with active anti-ransomware protection, as an additional shield to your current protection. The tool provides Zero-Day protection against ransomware and allows you to recover files. ZoneAlarm Anti-Ransomware is compatible with all other antiviruses, firewalls, and security software except ZoneAlarm Extreme (already shipped with ZoneAlarm Anti-Ransomware) or Check Point Endpoint products. The killer features of this application are: automatic file recovery, overwrite protection that instantly and automatically recovers any encrypted files, file protection that detects and blocks even unknown encryptors.

2. Back up your files

As an additional way to save your files, we recommend online backup. Local storage, such as hard drives, SSDs, flash drives, or remote network storage can be instantly infected by the virus once plugged in or connected to. AttackSystem Ransomware uses some techniques to exploit this. One of the best services and programs for easy automatic online backup is iDrive. It has the most profitable terms and a simple interface. You can read more about iDrive cloud backup and storage here.

3. Do not open spam e-mails and protect your mailbox

Malicious attachments to spam or phishing e-mails are the most popular method of ransomware distribution. Using spam filters and creating anti-spam rules is good practice. One of the world leaders in anti-spam protection is MailWasher Pro. It works with various desktop applications and provides a very high level of anti-spam protection.