This article has been created to help you fully remove the AES-NI ransomware infection and restore .aes-ni encrypted files.

A ransomware virus has been detected in April 2017, oriented towards English-speaking users. The virus may spread worldwide, but it stops once it detects it has been activated on countries from the former Soviet Union. The AES-NI ransomware aims to encrypt the files on the computers infected by it using ECB mode and AES-256 encryption algorithm. It then locks the files with RSA-2048, generating unique decryption keys which are then sent to the servers of the cyber-criminals. Then, AES-NI drops a ransom note, named !!! READ THIS – IMPORTANT !!!.txt in which it demands a hefty ransom to be paid in order for the cyber-criminals to restore the encrypted files back to working state. In case you have been infected by the AES-NI ransomware, recommendations are to read this article.

Threat Summary

Name	AES-NI Virus
Type	Ransomware
Short Description	Encrypts important documents and other files on computers it infects. Asks for a ransom to be paid.
Symptoms	The victim may see a ransom note, named !!! READ THIS – IMPORTANT !!!.txt and the files encrypted with and added .aes-ni file extension.
Distribution Method	Via an Exploit kit, Dll file attack, malicious JavaScript or a drive-by download of the malware itself in an obfuscated manner.
Detection Tool	See If Your System Has Been Affected by AES-NI Virus Download Malware Removal Tool
User Experience	Join our forum to Discuss AES-NI Virus.
Data Recovery Tool	Windows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.

AES-NI Ransomware – Infection Process

The infection file of the AES-NI ransomware may be a heavily obfuscated JavaScript that is malicious or a dropper file. It may also be a Trojan horse or other malware, such as botnet that has previously compromised the victim PC.

The distribution of the infection file may be conducted via massive spam e-mail campaigns that aim for one thing only – to trick users into either clicking on the malicious file or a malicious web link that is embedded within the body of the e-mail sent. One example of such message can be seen below:

Besides e-mail, cyber-criminals who are behind the AES-NI infection may authorize themselves to upload malicious files on file-sharing websites, like torrent sites, for example. Such files may be presented to the user as key generators to activate a license for a given program or a crack or patch for different software.

Other infection methods may include attacks via fake updates or as a result of a malicious browser redirect. Such can happen if the user has an ad-supported potentially unwanted application, also known as PUA.

Once an infection has happened, by any of those scenarios, AES-NI ransomware’s malicious files may be dropped on the infected computer. They include:

• !!! READ THIS – IMPORTANT !!!.txt
• .key.aes_ni files
• Exectuable files located in the %System Drive%, %AppData% or %Windows% folders.

.Aes-ni File Virus – Infection Activity

Besides the primary malicious files of AES-NI, the virus may also create duplicate files or support modules of different file types (.dll, .tmp, .vbs, .bat, .exe) that may be located in the following Windows directories:

• %AppData%
• %Roaming%
• %Local%
• %LocalLow%
• %SystemDrive%
• %Windows%
• %System32%

The activity of the virus may also include the modifications of Windows Registry sub-keys in a way that the malicious executable that encrypts files runs on system start-up. The keys targeted for this are the following:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce

In those keys, the AES-NI virus may create custom value strings with the path to the malicious files, so if you are removing the virus manually, you can open the key and see where the malicious file is located.

The AES-NI virus also performs a check of the location of the compromised computer, and if the computer is from one of the former Soviet Union countries, the AES-NI ransomware self-deletes and does not encrypt any files.

Other activities of the AES-NI ransomware infection may include the modification of the Window Shadow copies via the following administrative Winodws Command prompt command lines:

→ process call create “cmd.exe /c
vssadmin.exe delete shadows /all /quiet
bcdedit.exe /set {default} recoveryenabled no
bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures

The Encryption Process of AES-NI Ransomware

To encrypt files, this ransomware virus uses the so-called ECB encryption mode. This encryption mode includes several different encryption sequences. The mode is also known as Electronic Code Book mode. This mode is used when more than one block of data with the same key is encrypted once. The encryption algorithm for the ECB mode is called Advanced Encryption Standard (AES) and is the strongest AES-256 bit. Then , the AES-NI ransomware may combine the file encryption with the RSA algorithm which generates a unique decryption key for each file or set of files. The decryption keys may then be sent via encrypted connection to the servers of the cyber-criminals who are behind AES-NI ransomware.

Among the files encrypted by AES-NI ransomware may be the following:

• Documents.
• Music.
• Videos.
• Recordings.
• Images.
• Database files.

After the encryption process has completed, the AES-NI ransomware sets a custom file extension to the encrypted files and they appear like the following:

The final step of the encryption process is to notify the victim of the encrypted files. This happens by dropping the ransom note of the virus, named !!! READ THIS – IMPORTANT !!!.txt. It has the following content:

==========================# aes-ni ransomware #==========================
█████╗ ██████╗██████╗ ███╗ ██╗ ██╗
██╔═██╗██╔═══╝██╔═══╝ ████╗ ██║ ██║
██████║█████╗ ██████╗███╗██╔██╗██║ ██║
██╔═██║██╔══╝ ╚═══██║╚══╝██║╚████║ ██║
██║ ██║██████╗██████║ ██║ ╚███║ ██║
╚═╝ ╚═╝╚═════╝╚═════╝ ╚═╝ ╚══╝ ╚═╝
SORRY! Your files are encrypted.
File contents are encrypted with random key (AES-256 bit; ECB mode).
Random key is encrypted with RSA public key (2048 bit).
We STRONGLY RECOMMEND you NOT to use any “decryption tools”.
These tools can damage your data, making recover IMPOSSIBLE.
Also we recommend you not to contact data recovery companies.
They will just contact us, buy the key and sell it to you at a higher price.
If you want to decrypt your files, you have to get RSA private key.
In order to get private key, write here:
[email protected]
Also there is one fast way to contact us.
If you are familiar with Jabber, write us to JID: [email protected] (it is Jabber, not e-mail address!)
You can get Jabber account for example at https://www.xmpp.jp/signup
IMPORTANT: In some cases malware researchers can block our e-mails.
If you did not receive any answer on e-mail in 48 hours,
please do not panic and write to BitMsg (https://bitmsg.me) address:
BM-2cVgoJS8HPMkjzgDMVNAGg5TG3bb1TcfhN
or create topic on https://www.bleepingcomputer.com/ and we will find you there.
Also it will be better if you download Tor browser here: https://www.torproject.org/download/download-easy.html.en
Download, install and run it; then visit our site (from Tor browser): http://kzg2xa3nsydva3p2.onion/index.php
Please do not visit this site from standard browser: it just will not open. You need Tor Browser to open .onion sites.
There is a form, you can write us there if all e-mails are blocked and we will contact you very fastly.
If someone else offers you files restoring, ask him for test decryption.
Only we can successfully decrypt your files; knowing this can protect you from fraud.
You will receive instructions of what to do next.
You MUST refer this ID in your message:
{Unique ID}Also you MUST send all “.key.aes_ni” files from C:\ProgramData if there are any.
==========================# aes-ni ransomware #==========================

Source: id-ransomware-blogspot.bg

Remove .AES-NI Virus and Get Your Data Back

Before removing the AES-NI ransomware, it is strongly recommended to back up all your files. Then, we advise following the removal instructions down below. They are carefully designed to help isolate the threat first and remove it second. For maximum effectiveness, experts strongly advise removing AES-NI ransomware automatically by performing a scan with a particular anti-malware software. It will also protect the system in the future.

For the restoration of the files, keep following this article, as a free decryptor is yet to be released. However, you can still restore chunk of the files by using some of the alternative methods for file recovery below in step “2. Restore files encrypted by AES-NI Virus”.

Manually delete AES-NI Virus from your computer

Note! Substantial notification about the AES-NI Virus threat: Manual removal of AES-NI Virus requires interference with system files and registries. Thus, it can cause damage to your PC. Even if your computer skills are not at a professional level, don’t worry. You can do the removal yourself just in 5 minutes, using a malware removal tool.

1. Boot Your PC In Safe Mode to isolate and remove AES-NI Virus files and objects

Boot Your PC Into Safe Mode

1. For Windows 7,XP and Vista. 2. For Windows 8, 8.1 and 10. Fix registry entries created by AES-NI Virus on your PC.

For Windows XP, Vista, 7 systems:

1. Remove all CDs and DVDs, and then Restart your PC from the “Start” menu.
2. Select one of the two options provided below:

– For PCs with a single operating system: Press “F8” repeatedly after the first boot screen shows up during the restart of your computer. In case the Windows logo appears on the screen, you have to repeat the same task again.

– For PCs with multiple operating systems: Тhe arrow keys will help you select the operating system you prefer to start in Safe Mode. Press “F8” just as described for a single operating system.

3. As the “Advanced Boot Options” screen appears, select the Safe Mode option you want using the arrow keys. As you make your selection, press “Enter“.

4. Log on to your computer using your administrator account

While your computer is in Safe Mode, the words “Safe Mode” will appear in all four corners of your screen.

Step 1: Open the Start Menu

Step 2: Whilst holding down Shift button, click on Power and then click on Restart.
Step 3: After reboot, the aftermentioned menu will appear. From there you should choose Troubleshoot.

Step 4: You will see the Troubleshoot menu. From this menu you can choose Advanced Options.

Step 5: After the Advanced Options menu appears, click on Startup Settings.

Step 6: Click on Restart.

Step 7: A menu will appear upon reboot. You should choose Safe Mode by pressing its corresponding number and the machine will restart.

Some malicious scripts may modify the registry entries of your computer to change different settings. This is why manual clean up of your Windows Registry Database is strongly recommended. Since the tutorial on how to do this is a bit lenghty, we recommend following our instructive article about fixing registry entries.

2.Find malicious files created by AES-NI Virus on your PC

Find malicious files created by AES-NI Virus

1. For Windows 8, 8.1 and 10. 2. For Windows 7,XP and Vista.

For Newer Windows Operating Systems

Step 1:

On your keyboard press  + R and write explorer.exe in the Run text box and then click on the Ok button.

Step 2:

Click on your PC from the quick access bar. This is usually an icon with a monitor and its name is either “My Computer”, “My PC” or “This PC” or whatever you have named it.

Step 3:

Navigate to the search box in the top-right of your PC’s screen and type “fileextension:” and after which type the file extension. If you are looking for malicious executables, an example may be “fileextension:exe”. After doing that, leave a space and type the file name you believe the malware has created. Here is how it may appear if your file has been found:

N.B. We recommend to wait for the green loading bar in the navination box to fill up in case the PC is looking for the file and hasn’t found it yet.

For Older Windows Operating Systems

In older Windows OS’s the conventional approach should be the effective one:

Step 1:

Click on the Start Menu icon (usually on your bottom-left) and then choose the Search preference.

Step 2:

After the search window appears, choose More Advanced Options from the search assistant box. Another way is by clicking on All Files and Folders.

Step 3:

After that type the name of the file you are looking for and click on the Search button. This might take some time after which results will appear. If you have found the malicious file, you may copy or open its location by right-clicking on it.

Now you should be able to discover any file on Windows as long as it is on your hard drive and is not concealed via special software.

Automatically remove AES-NI Virus by downloading an advanced anti-malware program

1. Remove AES-NI Virus with SpyHunter Anti-Malware Tool and back up your data

Remove AES-NI Virus with SpyHunter Anti-Malware Tool

1. Install SpyHunter to scan for and remove AES-NI Virus.2. Scan with SpyHunter to Detect and Remove AES-NI Virus. Back up your data to secure it against infections and file encryption by AES-NI Virus in the future.

Step 1:Click on the “Download” button to proceed to SpyHunter’s download page.

Download

Malware Removal Tool

It is highly recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter.

Step 2: Guide yourself by the download instructions provided for each browser.
Step 3: After you have installed SpyHunter, wait for it to automatically update.

Step1: After the update process has finished, click on the ‘Scan Computer Now’ button.

Step2: After SpyHunter has finished scanning your PC for any AES-NI Virus files, click on the ‘Fix Threats’ button to remove them automatically and permanently.

Step3: Once the intrusions on your PC have been removed, it is highly recommended to restart it.

Back up your data to secure it against attacks in the future

IMPORTANT! Before reading the Windows backup instructions, we highly recommend to back up your data automatically with cloud backup and insure it against any type of data loss on your device, even the most severe. We recommend reading more about and downloading SOS Online Backup .

SOS Online Backup

2. Restore files encrypted by AES-NI Virus

Restore Files Encrypted by AES-NI Virus

Ransomware infections like AES-NI Virus aim to encrypt your files using an encryption algorithm which may be very difficult to directly decrypt. This is why we have suggested several alternative methods that may help you go around direct decryption and try to restore your files. Bear in mind that they may not be 100% effective but they may help you little or a lot in some situations.

Method 1: Scanning your drive’s sectors by using Data Recovery software.
Another method of restoring your files is by trying to bring back your files via data recovery software. Here are some suggestions for preferred data recovery software solutions:

• Stellar Phoenix Data Recovery Technicians License(Pro version with more features)
• Stellar Phoenix Windows Data Recovery
• Stellar Phoenix Photo Recovery

Method 2: Trying Kaspersky and EmsiSoft’s decryptors.
If the first method does not work, we suggest trying to use decryptors for other ransomware viruses, in case your virus is a variant of them. The two primary developers of decryptors are Kaspersky and EmsiSoft, links to which we have provided below:

• Kaspersky Decryptors
• Emsisoft Decryptors

Urgent! It is strongly advisable to first remove the AES-NI Virus threat before attempting any decryption, since it may interfere with system files and registries. You can do the removal yourself just in 5 minutes, using an advanced malware removal tool.

Method 3: Using Shadow Explorer

To restore your data in case you have backup set up, it is important to check for shadow copies in Windows using this software if ransomware has not deleted them:

• Shadow Explorer

Method 4: Finding AES-NI Virus decryption key while it communicates it via a network sniffing software.

Another way to decrypt the files is by using a Network Sniffer to get the encryption key, while files are encrypted on your system. A Network Sniffer is a program and/or device monitoring data traveling over a network, such as its internet traffic and internet packets. If you have a sniffer set before the attack happened you might get information about the decryption key. See how-to instructions below:

Instructions on How to Find Decryption Key for Files Encrypted By Ransowmare

Optional: Using Alternative Anti-Malware Tools

Remove AES-NI Virus Using Other Alternative Tools

STOPZilla Anti Malware

1. Download and Install STOPZilla Anti-malware to Scan for And Remove AES-NI Virus.
Step 1: Download STOPZilla by clicking here.
Step 2: A pop-up window will appear. Click on the ‘Save File’ button. If it does not, click on the Download button and save it afterwards.

Step 3: After you have downloaded the setup, simply open it.
Step 4: The installer should appear. Click on the ‘Next’ button.

Step 5: Check the ‘I accept the agreement’ check circle if not checked if you accept it and click the ‘Next’ button once again.

Step 6: Review and click on the ‘Install’ button.

Step 7: After the installation process has completed click on the ‘Finish’ button.

2. Scan your PC with STOPZilla Anti Malware to remove all AES-NI Virus associated files completely.
Step 1: Launch STOPZilla if you haven’t launched it after install.
Step 2: Wait for the software to automatically scan and then click on the ‘Repair Now’ button. If it does not scan automatically, click on the ‘Scan Now’ button.

Step 3: After the removal of all threats and associated objects, you should Restart your PC.

Update May 2017! A decrypter has been developed for a ransomware virus, known by many as AES-NI ransomware. Full instructions on this web link.

Vencislav Krustev

Ventsislav has been covering the latest malware, software and newest tech developments at SensorsTechForum for 3 years now. He started out as a network administrator. Having graduated Marketing as well, Ventsislav also has passion for discovery of new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management and then Network Administration, he found his passion within cybersecrurity and is a strong believer in basic education of every user towards online safety.

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