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SynAck ransomware virus. How to remove? (Uninstall guide)

removal by Ugnius Kiguolis - - | Type: Ransomware
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SynAck ransomware wreaks havoc worldwide, targets businesses

SynAck ransomware virus spreads worldwide

SynAck (also found as Syn Ack) is a ransomware[1] virus that encrypts files on the victim’s computer. It was discovered on August 3rd, 2017, and currently, there are three versions of the virus available. After encrypting victim’s files, the malicious program saves RESTORE_INFO-[id].txt file on the desktop to provide data recovery instructions.

The ransomware provides information about encryption ciphers used in the aforementioned ransom note:

Files are encrypted, algorithm used: ecies-secp192r1 & aes-ecb-256.

Different SynAck virus versions provide slightly different information in the ransom notes. Each version presents contact details so that the victim could get in touch with the criminals:

  • The first SynAck version suggests writing to synack@secmail.pro, synack@scryptmail.com, synack@xmail.net, synack@cock.li or synack@countermail.com and leaves BM-2cTp9eosgjWs8SV14kYCDzPN3HJkwYk1LQ BitMessage ID as an alternate way of contacting criminals;
  • The second ransomware version provides tyughjvbn13@scryptmail.com email and a different BitMessage ID: BM-2cStoatQC4mDNWDHAoo2C1nYZJXhDsjCLj;
  • Currently, final SynAck malware version suggests writing to bubkjdws@scryptmail.com or BM-2cWsgWxq1X5M6qjDEBPvCdEbbPLn2zi43k via BitMessage.

According to victims’ reports, the SynAck developers can ask as much as $2100 in Bitcoin for data recovery service. Unfortunately, the wallet associated with the virus currently holds over 98 Bitcoins, which means that criminals have collected a lot of ransoms already. You shouldn’t pay them – this only motivates them to keep updating and improving their illegal operations.

The virus doesn’t use the same extension to mark victim’s files – instead, it generates an individual set of ten random characters per file and appends it after the original file extension.

It is highly advisable to remove SynAck virus as soon as you notice its presence on your computer. Please remember that removing the virus won’t recover your files – you have to have a data backup in order to do it. However, programs like Reimage can not only eliminate the ransomware but also restore corrupted Windows system files that may have been destructed during the cyber attack.

We do not suggest trying to perform manual SynAck removal because the virus is simply too sophisticated to be deleted by inexperienced computer users. Besides, you must check whether the ransomware was the only virus that entered your computer, so a full computer scan is highly recommended.

Syn Ack reportedly distributed via RDP

SynAck ransomware seems to be distributed via RDP attacks[2]. Criminals are trying to brute-force their way into victim’s computers or computer networks. This way, the virus can quickly compromise enterprise networks and demand huge ransoms for data recovery tools.

On top of that, the malware might be distributed using other means such as malvertising, malicious spam, and similar techniques. The continuous movement of Bitcoins in the aforementioned Bitcoin wallet gives us a reason to believe that the malicious software might be provided as ransomware-as-a-service, meaning that any criminal can join the affiliate program and help to distribute the virus further.

Keeping your anti-malware software up-to-date, creating a data backup and enabling automatic software updates is what can help you to prevent a ransomware attack. Do not forget to use powerful passwords on Remote Desktop Connection accounts, too.

Experts report that the described ransomware strongly affected U.S., France, Belgium and Netherlands[3].

Remove SynAck malware from your computer

It is highly advisable to use professional malware removal software to remove SynAck virus. It is not a typical computer program, and you can’t uninstall it via Control Panel using its uninstaller.

To perform a successful SynAck removal, employ a software like Reimage or Malwarebytes Anti Malware. You might need to restart your PC in a particular mode if the security software fails to start in the normal regime (it means that the malware is trying to block your attempts to identify and remove the virus).

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What to do if failed?
If you failed to remove infection using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to uninstall SynAck ransomware virus. Free scanner allows you to check whether your PC is infected or not. If you need to remove malware, you have to purchase the licensed version of Reimage malware removal tool.
More information about this program can be found in Reimage review.
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Manual SynAck virus Removal Guide:

Remove SynAck using Safe Mode with Networking

Prepare your PC for SynAck removal – reboot it into Safe Mode with Networking. Once the computer is ready, run your anti-spyware or anti-malware program to detect and eliminate malicious files.

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove SynAck

    Log in to your infected account and start the browser. Download Reimage or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete SynAck removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Remove SynAck using System Restore

  • Step 1: Reboot your computer to Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of SynAck. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with Reimage and make sure that SynAck removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove SynAck from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by 2-spyware.com security experts.

You can restore files from a backup, however, if you do not have it, it will be much harder to recover your data. You may want to try one of the described methods:

If your files are encrypted by SynAck, you can use several methods to restore them:

Test Data Recovery Pro

One of the most efficient data recovery tools available today is Data Recovery Pro. You might want to try it and see if it manages to recover some files encrypted by SynAck.

ShadowExplore software may help

It is very likely that the ransomware deleted Volume Shadow Copies that are required for ShadowExplorer software to work. However, it can't hurt to try:

  • Download Shadow Explorer (http://shadowexplorer.com/);
  • Follow a Shadow Explorer Setup Wizard and install this application on your computer;
  • Launch the program and go through the drop down menu on the top left corner to select the disk of your encrypted data. Check what folders are there;
  • Right-click on the folder you want to restore and select “Export”. You can also select where you want it to be stored.

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from SynAck and other ransomwares, use a reputable anti-spyware, such as Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware

About the author

Ugnius Kiguolis
Ugnius Kiguolis - The mastermind

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References

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