Severity scale:  
  (95/100)

Remove Ahihi ransomware (Removal Instructions) - Decryption Methods Included

removal by Linas Kiguolis - - | Type: Ransomware

Ahihi is a new ransomware based on the HiddenTear open-source project

Ahihi ransomware

Ahihi ransomware is a file locker that was spotted in January 2019. It uses AES encryption to lock up data and, unlike most other crypto viruses, appends no extension to the affected files. Nevertheless, it does drop the ransom note README.txt, which provides the information about what happened to the victim's data and what needs to be done in order to retrieve them. Ahihi ransomware stems from a well-known HiddenTear project, and its main file comes under the name of BangLuongThang02.

Name Ahihi
Type Ransomware
Main file BangLuongThang02.exe
Based on HiddenTear
Extension None
Cipher AES
Ransom note README.txt
Decryptable? No
Elimination Use reputable anti-malware software like Reimage or SpyHunter 5Combo Cleaner

While Ahihi ransomware is not that prevalent, multiple AV engines recognize the malware as:[1]

  • Trojan.GenericKD.31477924
  • Win32:Trojan-gen
  • Trojan.Encoder.10598
  • TR/Ransom.arobl
  • HEUR:Trojan-Ransom.MSIL.Encoder.gen
  • Trojan.Crypt, etc.

Because the ransomware is fairly new, we recommend using security software that detects the malicious components – Reimage or SpyHunter 5Combo Cleaner can take care of Ahihi ransomware removal.

Ahihi ransomware uses typical distribution methods, such as spam emails, repacked or cracked installers, fake updates, brute-force[2] attacks, exploits, and similar. Soon after the infiltration, the virus scans the machine for music, videos, pictures, documents, databases, and similar files to encrypt them.

While Ahihi virus does not append an extension to each of the files, it still prevents users from opening them due to the powerful encryption algorithm. After the encoding process is complete, malware will try to communicate to the Command & Control server in order to retrieve the ransom note which states:

Your files have been encrypted, If you want to get your files back, please visit http://ripyon.me/decrypt and provide us the following information:

Your computer name: *** 
Your username: *** 
Your token: *** 

CAUTION: DO NOT run this app again or your files will be encrypted permanently

The linked address is currently down, so there is no way to contact crooks in general, which is a good thing. Paying cybercriminals will only prompt them to make more sophisticated ransomware and expand their campaign even further. Besides, Ahihi virus authors may ask for a large amount of money in Bitcoin.

In case the malware cannot access the Command & Control server it displays the following note:

Your files have been encrypted. Unfortunately, you cannot get your files back. We are sorry ^.^

If your files got encrypted, do not panic. You should remove Ahihi ransomware from your computer first, and then attempt the file recovery procedure. Be aware that no decryptor is created by security experts yet, so getting the access to your data might be a tough task.

Nevertheless, if you have no backups ready, we suggest you try third-party recovery software that might be able to help you. If not, you should keep the copy of encrypted files and wait for the official decipher to be released. 

Ahihi ransomware virus
Ahihi is a ransomware that does not use any file extension by still encrypts files with the help AES cipher

Ransomware distribution methods and means of protection

Unlike potentially unwanted programs like adware, ransomware is one of the most dangerous kinds of infection because, even after its elimination, the encrypted files remain inaccessible. Whether or not the data can be decrypted depends if the victim is willing to spend thousands of dollars for the decryptor, or if backups were prepared before the infection occurred. However, the best solution would be not to get infected in the first place. Security researchers[3] recommend practicing the following:

  • Employ reputable anti-malware application with a real-time scanner that would be able to stop the malware before its intrusion;
  • Beware of phishing emails – do not open suspicious attachments or click on hyperlinks. The anti-spam solution is also an excellent way to protect yourself from unexpected virus attacks;
  • Patch your software and the operating system on a regular basis so that malicious actors would not be able to abuse vulnerabilities of the applications installed (Adobe Flash is one of the best examples);
  • Use strong passwords for all accounts;
  • Make use of the VPN when using Remote Desktop;
  • Do not click on suspicious pop-ups or explore sites you got redirected to;
  • Avoid high-risk sites like file-sharing, porn, gambling, etc.

Ahihi ransomware removal steps

As we already mentioned, you will need a reputable anti-malware tool in order to remove Ahihi virus from your machine. We recommend using Reimage or SpyHunter 5Combo Cleaner, although other software that can recognize and extinguish the virus can do the job.

Do not waste your time by trying to perform manual Ahihi ransomware removal, as the process is too complicated and requires profound computer knowledge. Instead, enter Safe Mode with Networking as explained below and complete a full system scan. The AV engine will be able to get rid of the virus for you.

For file recovery, refer to our section below – we provide full instructions on how to use third-party apps.

Offer
do it now!
Download
Reimage (remover) Happiness
Guarantee
Download
Reimage (remover) Happiness
Guarantee
Compatible with Microsoft Windows Supported versions Compatible with OS X Supported versions
What to do if failed?
If you failed to remove virus damage using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to remove virus damage. 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.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with SpyHunter 5.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with Combo Cleaner.

To remove Ahihi virus, follow these steps:

Remove Ahihi using Safe Mode with Networking

To remove Ahihi ransomware from your PC safely, enter Safe Mode with Networking by following this guide:

  • 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 Ahihi

    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 Ahihi removal.

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

Remove Ahihi using System Restore

System Restore might be able to help you stop the virus as well:

  • 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 Ahihi. 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 Ahihi removal is performed successfully.

Bonus: Recover your data

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

Because there is no possibility to contact hackers, you should simply rely on backups or alternative file recovery methods. 

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

Data Recovery Pro might be able to help with file recovery

While Data Recovery Pro is initially created to restore corrupted or accidentally deleted files, it has seen success in recovering data affected by ransomware. 

  • Download Data Recovery Pro;
  • Follow the steps of Data Recovery Setup and install the program on your computer;
  • Launch it and scan your computer for files encrypted by Ahihi ransomware;
  • Restore them.

Try out Windows Previous Feature to restore some files

This method can be useful if System Restore was activated before the malware attack.

  • Find an encrypted file you need to restore and right-click on it;
  • Select “Properties” and go to “Previous versions” tab;
  • Here, check each of available copies of the file in “Folder versions”. You should select the version you want to recover and click “Restore”.

ShadowExplorer might be the answer

Most ransomware viruses attempt to remove Shadow Volume Copies in order to complicate the file recovery. However, some viruses fail this process and full file recovery using ShadowExplorer becomes possible.

  • 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.

No decryptor for Ahihi ransomware is created yet

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Ahihi and other ransomwares, use a reputable anti-spyware, such as Reimage, SpyHunter 5Combo Cleaner or Malwarebytes

About the author

Linas Kiguolis
Linas Kiguolis - Expert in social media

If this free removal guide helped you and you are satisfied with our service, please consider making a donation to keep this service alive. Even a smallest amount will be appreciated.

Contact Linas Kiguolis
About the company Esolutions

References


Your opinion regarding Ahihi ransomware