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Trojan win32/Tiggre!rfn. How to remove? (Uninstall guide)

removal by Alice Woods - - | Type: Trojans

Trojan:win32/Tiggre!rfn is a virus that secretly mines cryptocurrency and causes slow downs and related problems on the system

Trojan win32/Tiggre!rfn virus

Questions about Trojan win32/Tiggre!rfn

Trojan:win32/Tiggre!rfn is a malicious program created by cybercriminals to mine cryptocurrency on victims’ computers. The malignant file is sent out to users as a video file, but, in reality, it is AutoIt script that runs specific tasks to misuse computer's resources for making cryptocurrency. At the moment, Windows security software is detecting it as Trojan:win32/Tiggre!rfn. However, you can also find this threat under other names, including TROJ_DIGMINEIN.A (Trend Micro), Trojan.GenericKD.12694003 (BitDefender), W32/Autoit.CGO!tr (Fortinet) and others. If any of these names comes on your computer's screen, make sure you take needed actions to stop malicious activities on your computer.

SUMMARY
Name Trojan win32/Tiggre!rfn
Type Trojan horse
Sub-type Cryptocurrency-mining bot
Executable file cherry.exe
Signs and symptoms Significantly increased load on CPU, slow overall PC performance
Distribution Spam emails, Facebook messenger, malicious websites
Elimination Perform a full computer scan with Reimage

As soon as win32/Tiggre!rfn virus is delivered, it modifies registry entries[1] and makes other changes to users’ computers to ensure its presence each time Windows start. Additionally, malware disables any security software located on a targeted computer, making it much harder to detect and delete. To ensure full elimination, reboot your PC in Safe mode and scan your computer with Reimage or another reputable security tool.

The malicious file arrives at the victims’ systems with the help of other malware programs or is downloaded from malicious websites. Trojan also was noticed to be spread via Facebook Messenger. Therefore, users should be careful while downloading files from Facebook.

win32/Tiggre!rfn trojan affects all versions of Windows, including Windows Vista, Windows 7, Windows 8 and others. It drops an executable file called cherry.exe. This file can be found in the task manager with its original location being %Application Data%\{User name}\cherry.exe.

Signs and symptoms of crypto-mining bot presence

Cryptojacking is a term used to describe a process when hackers employ malicious software to farm cryptocurrency (like Bitcoin, Monero, Ethereum and many others) every time the machine starts. Alternatively, a malicious script ran online can execute the same process without intruding computers directly.

The most significant problem of a trojan that it typically does not expose many symptoms. However, the crypto-mining virus usually has one distinctive feature – it slows down the CPU[2] and GPU performance considerably because cryptocurrency mining uses a lot of computer resources to solve complex mathematical problems.

Not only simple tasks might become hard to accomplish because of high CPU usage, but even simple ones like loading a webpage or rebooting your PC might take a very long time. This might decrease the life of your CPU or damage it beyond repair because of the overheating issues. If your PC started to behave sluggishly, its time to perform a full computer scan and instantaneously proceed with Trojan win32/Tiggre!rfn removal.

Another nasty trait of a trojan horse is that it can open the door to other malicious infections, including spyware, keyloggers, ransomware, other trojans and similar. These dangerous viruses can steal and share personal information, lock up your files and even lead to hardware failure.

Ways to protect yourself from harmful trojan horses and other malware

Malware can cause extreme damage, not to only your computer but can endanger your virtual safety too. Therefore, it is vital to know how malicious programs are distributed to be able to protect yourself from them.

NoVirus.uk[3] experts segregate the following infection methods:

  • Spam emails. Emails from unknown sources can contain malicious payload inside the attachment, or the link can be presented which leads directly to the malicious file. Thus, it is important never to open any emails from unknown sources. If you are not sure whether the email and attachment are legitimate, scan the attached file with powerful security software. DO NOT execute the file. The following file types are typically used: .txt, .pdf and .doc.
  • Compromised or illegal websites. Dubious websites, such as torrent sites, can hide malware inside program installers. Additionally, installing pirated software is illegal and can bring you in a lot of trouble.
  • Malicious adverts and redirects. Do not click on any ads of unknown origin. Additionally, when you get redirected, restrain yourself from clicking on anything and close down your browser immediately. Make sure your previously opened tabs do not open.
  • win32/Tiggre!rfn virus is known to be spread via social media, namely Facebook Messenger program. Thus, do not download any files from unknown individuals. Additionally, infected computers might be distributing malware from legal Facebook accounts so be wary!

Trojan win32/Tiggre!rfn elimination can prevent your CPU from overheating

We do not recommend manual Trojan win32/Tiggre!rfn removal. Trojan horses are dangerous and complicated viruses, and its elimination requires in-depth computer system files knowledge. Besides, tampering with system files can permanently damage your OS.

Thus, we advise you to remove win32/Tiggre!rfn virus using powerful security software. We recommend using Reimage, Malwarebytes MalwarebytesCombo Cleaner or Plumbytes Anti-MalwareMalwarebytes Malwarebytes. Do not forget that the trojan will not let security software to start properly. Therefore, you need to restart your PC in Safe Mode with networking and start the security program from there.

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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.
More information about this program can be found in Reimage review.

If you decided to select another anti-spyware, uninstall Reimage from your computer.
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Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with Malwarebytes.
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 Trojan win32/Tiggre!rfn, follow these steps:

Remove Trojan win32/Tiggre!rfn using Safe Mode with Networking

To make sure the anti-virus program can start correctly, reboot your PC in Safe Mode with Networking. Please follow these steps:

  • 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 Trojan win32/Tiggre!rfn

    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 Trojan win32/Tiggre!rfn removal.

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

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Trojan win32/Tiggre!rfn and other ransomwares, use a reputable anti-spyware, such as Reimage, Malwarebytes MalwarebytesCombo Cleaner or Plumbytes Anti-MalwareMalwarebytes Malwarebytes

About the author

Alice Woods
Alice Woods - Likes to teach users about virus prevention

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References

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