Tinynuke Banking Trojan

Also Known As: Tinynuke malware
Type: Trojan
Distribution: Low
Damage level: Severe

Tinynuke virus removal guide

What is Tinynuke?

Tinynuke (also known as Nukebot) is a trojan-type application that collects account credentials. Tinynuke hijacks browsers and gathers data when users visit banking websites. After its initial release in late 2016, Tinynuke was being sold on various hacker forums, however, in early 2017, the entire source code was leaked and, therefore, the malware became publicly accessible.

Tinynuke malware

Research shows that Tinynuke injects JavaScript into certain bank websites (including Amazon and Lloyds bank). In addition, Tinynuke collects HTTP POST request data from Internet Explorer, Google Chrome, and Mozilla Firefox. This is done to gather various account credentials, especially targeting bank accounts. Cyber criminals aim to generate as much revenue as possible and are likely to misuse hijacked accounts through online purchases, money transfers, and so on. Therefore, victims might encounter serious financial loss. Furthermore, many users are often careless, lack knowledge in cyber security, and often use the same login details (emails) and passwords for multiple accounts. Thus, after gaining access to one account, criminals are often able to access a number of others. Email, social networks and other similar accounts can be used to steal the victim's identity. These criminals might send malicious files to the victim's contacts or attempt to borrow money, thereby causing even more issues. In summary, the presence of Tinynuke trojan can lead to serious privacy issues and significant financial loss (debts, lost savings, etc.). Tinynuke is often promoted using spam email campaigns. Therefore, if you have recently opened suspicious attachments or see dubious processes (e.g., such as "RDVGHelper") in Windows Task Manager, immediately scan the system with a reputable anti-virus/anti-spyware suite and eliminate all detected threats.

Threat Summary:
Name Tinynuke malware
Threat Type Trojan, Password stealing virus, Banking malware, Spyware.
Symptoms Trojans are designed to stealthily infiltrate the victim's computer and remain silent. Thus, no particular symptoms are clearly visible on an infected machine.
Distribution methods Infected email attachments, malicious online advertisements, social engineering, software cracks.
Damage Stolen banking information, passwords, identity theft, victim's computer added to a botnet.
Malware Removal (Windows)

To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Malwarebytes.
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There are many trojan-type infections that share similarities with Tinynuke. For example, TrickBot, Adwind, FormBook, and so on. Although the developers are different, these programs have virtually identical behavior - all collect information. Therefore, they pose a significant threat to your privacy and financial safety. Eliminating infections such as Tinynuke immediately.

Tinynuke malware technical analysis:

  • Detection names (ofdeploy.exe): Avast (Win32:Trojan-gen), BitDefender (AIT:Trojan.Nymeria.1628), Kaspersky (Trojan-Banker.Win32.TinyNuke.aar), ESET-NOD32 (Win32/Injector.Autoit.DTL)
  • Full list of antivirus detections (ofdeploy.exe): VirusTotal
  • Executable filenames: ofdeploy.exe, Invoice_260319_9lz8kba2e.DOC.exe, Loader_3.1-2019.exe
  • Sample first submitted (ofdeploy.exe): 2019-02-17 (created 2019-01-12)

How did Tinynuke infiltrate my computer?

A distribution method used by cyber criminals is spam email campaigns. They send deceptive email messages (e.g., fake invoices/bills for certain orders) and encourage users to open them. This results in system infections. One of the campaigns we analyzed sent emails with links to invoices regarding the refurbishment of a Samsung TV. The email contained a Dropbox link to download the attachment, which was presented as a Microsoft Word document (invoice). In fact, this was an executable called "Invoice_260319_9lz8kba2e.DOC.exe". In this way, users can end up infecting their computers manually. Spam email campaigns commonly proliferate trojans such as Tinynuke, however, criminals are also likely to spread these infections using fake software updaters/cracks and unofficial software download sources. Fake updaters infect computers by exploiting outdated software bugs/flaws or simply downloading and installing malware rather than the updates. Cracking tools activate paid software free of charge, however, since they are often used to proliferate malware, users commonly infect their computers, rather than gaining access to paid features. Peer-to-Peer (P2P) networks, freeware download websites, free file hosting sites, and similar, are used to proliferate malware by presenting it as legitimate software. As with email attachments, users are tricked into manually downloading and installing malware. In summary, the main reasons for computer infections are lack of knowledge of these threats and careless behavior.

How to avoid installation of malware?

To prevent this situation, be very cautious when browsing the internet and downloading, installing, and updating software. Never open email attachments that do not concern you (are irrelevant), or if the sender is unrecognizable/suspicious. Download software from official sources only, using direct download links. Third party downloaders/installers should not be used, since they often include rogue apps. Keeping installed applications and operating systems updated is also extremely important, however, use implemented functions or tools provided by the official developer. Be aware that software piracy is a cyber crime and the risk of infection is extremely high. Therefore, never attempt to crack installed apps. Lastly, have a reputable anti-virus/anti-spyware suite installed and running - these tools detect and eliminate malware before the system is harmed. If you believe that your computer is already infected, we recommend running a scan with Malwarebytes for Windows to automatically eliminate infiltrated malware.

Example of a spam email campaign promoting a download link of a malicious attachment that injects the Tinynuke trojan:

Spam campaign promoting Tinynuke trojan

Text presented within this email:

ORDER:
52' SAMSUNG REFURBISHED TV -349.99
Your VISA card has been charged successfully.
Shipping information >>
DHL 48 HOUR EXPRESS SHIPPING
REFURBISH COLO UK
Thank you for your order
Your order has been processed succesfully and your card has been charged.
Tracking number  will  be sent by email within 48 hours after your order has shipped.
You have earned 35 points  to use on your next order!
SHIPPING ADDRESS:
32 ST HELENS ROAD, LONDON, SE12 4EB
YOUR FULL INVOICE IS AVAILABLE BELOW
CLICK HERE FOR YOU INVOICE
If you have any issues with your order, contact information is provided inside your invoice.

Screenshot of the malicious attachment download on a Dropbox website:

Tinynuke malicious attachment Dropbox download

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Malwarebytes is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
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How to remove malware manually?

Manual malware removal is a complicated task - usually it is best to allow antivirus or anti-malware programs to do this automatically. To remove this malware we recommend using Malwarebytes for Windows. If you wish to remove malware manually, the first step is to identify the name of the malware that you are trying to remove. Here is an example of a suspicious program running on a user's computer:

malicious process running on user's computer sample

If you checked the list of programs running on your computer, for example, using task manager, and identified a program that looks suspicious, you should continue with these steps:

manual malware removal step 1 Download a program called Autoruns. This program shows auto-start applications, Registry, and file system locations:

screenshot of autoruns application

manual malware removal step 2Restart your computer into Safe Mode:

Windows XP and Windows 7 users: Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer start process, press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, and then select Safe Mode with Networking from the list.

Safe Mode with Networking

Video showing how to start Windows 7 in "Safe Mode with Networking":

Windows 8 users: Start Windows 8 is Safe Mode with Networking - Go to Windows 8 Start Screen, type Advanced, in the search results select Settings. Click Advanced startup options, in the opened "General PC Settings" window, select Advanced startup. Click the "Restart now" button. Your computer will now restart into the "Advanced Startup options menu". Click the "Troubleshoot" button, and then click the "Advanced options" button. In the advanced option screen, click "Startup settings". Click the "Restart" button. Your PC will restart into the Startup Settings screen. Press F5 to boot in Safe Mode with Networking.

Windows 8 Safe Mode with networking

Video showing how to start Windows 8 in "Safe Mode with Networking":

Windows 10 users: Click the Windows logo and select the Power icon. In the opened menu click "Restart" while holding "Shift" button on your keyboard. In the "choose an option" window click on the "Troubleshoot", next select "Advanced options". In the advanced options menu select "Startup Settings" and click on the "Restart" button. In the following window you should click the "F5" button on your keyboard. This will restart your operating system in safe mode with networking.

windows 10 safe mode with networking

Video showing how to start Windows 10 in "Safe Mode with Networking":

 

manual malware removal step 3Extract the downloaded archive and run the Autoruns.exe file.

extract autoruns.zip and run autoruns.exe

manual malware removal step 4In the Autoruns application, click "Options" at the top and uncheck the "Hide Empty Locations" and "Hide Windows Entries" options. After this procedure, click the "Refresh" icon.

Click 'Options' at the top and uncheck 'Hide Empty Locations' and 'Hide Windows Entries' options

manual malware removal step 5Check the list provided by the Autoruns application and locate the malware file that you want to eliminate.

You should write down its full path and name. Note that some malware hides process names under legitimate Windows process names. At this stage, it is very important to avoid removing system files. After you locate the suspicious program you wish to remove, right click your mouse over its name and choose "Delete".

locate the malware file you want to remove

After removing the malware through the Autoruns application (this ensures that the malware will not run automatically on the next system startup), you should search for the malware name on your computer. Be sure to enable hidden files and folders before proceeding. If you find the filename of the malware, be sure to remove it.

searching for malware file on your computer

Reboot your computer in normal mode. Following these steps should remove any malware from your computer. Note that manual threat removal requires advanced computer skills. If you do not have these skills, leave malware removal to antivirus and anti-malware programs. These steps might not work with advanced malware infections. As always it is best to prevent infection than try to remove malware later. To keep your computer safe, install the latest operating system updates and use antivirus software.

To be sure your computer is free of malware infections, we recommend scanning it with Malwarebytes for Windows.

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

QR Code
Tinynuke malware QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of Tinynuke malware on your mobile device.
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