Zumanek Trojan

Also Known As: Zumanek virus
Type: Trojan
Distribution: Low
Damage level: Severe

Zumanek virus removal guide

What is Zumanek?

Zumanek is a high-risk malware categorized as a banking/remote access trojan (RAT). This malware is distributed using social engineering, which means that cyber criminals trick users into downloading and installing Zumanek without their consent. Presence of this infection might cause various privacy issues and huge financial losses.

Zumanek malware

The main purpose of Zumanek is to steal bank account and cryptowallet credentials. What's interesting, however, is that at the time of research Zumanek targeted users mainly in Brasil (full list of targeted banks and cryptowallets). The dropper (executable which downloads Zumanek) is designed to check whether system locale is pt-br (a.k.a. Brasil). In that is not the case, then malware will not be downloaded. Moreover, most of targeted banks are Brasilian. Now it is obvious that cyber criminals aim to generate as much revenue as possible. Therefore, hijacked bank accounts and cryptowallets will probably be abused through online purchases, money transferring, and so on so forth. This means that presence of such infection may eventually lead to huge financial losses. As mentioned before, Zumanek is also categorized as a RAT, which means that it allows cyber criminals to manipulate the hijacked system. However, the list of supported features (commands) suggests that this is being done only to monitor the system itself (e.g., Zumanek can take screenshots, check system information, close browsers, restart computer, etc.) In other words, it doesn't seem that crooks would use Zumanek to spread other viruses. Nevertheless, screen capturing and other similar features may allow cyber criminals gain various personal information (e.g., photos, personal chats, logins/passwords, etc.), meaning that presence of this infection might lead to serious privacy issues or even identity theft. Elimination of Zumanek is paramount.

Threat Summary:
Name Zumanek virus
Threat Type Trojan, Password stealing virus, Banking malware, Spyware, Remote access trojan (RAT)
Detection Names (04042019071032osGBzySulM.bin)
BitDefender (Trojan.GenericKD.31860390), Emsisoft (Trojan.GenericKD.31860390 (B)), ESET-NOD32 (a variant of Win32/Spy.Zumanek.DI), Kaspersky (Trojan-Downloader.Win32.Delf.kwht), Full List (VirusTotal)
Malicious Process Name(s) Random string
Symptoms Trojans are designed to stealthily infiltrate 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, system manipulation
Removal

To eliminate Zumanek virus our malware researchers recommend scanning your computer with Spyhunter.
▼ Download Spyhunter
Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

Internet is full of trojan-type infections that allow cyber criminals to manipulate the system and steal personal data. For example, Rescoms, njRat, Chthonic, and so on so forth. Developers are different and the functionality may differ as well. However, at the end of the day all of them pose huge threat to user's privacy and financial/computer safety. Therefore, infections of this type should be eliminated as soon as possible.

How did Zumanek infiltrate my computer?

As mentioned above, Zumanek is proliferated via social engineering - a psychological manipulation of gullible users. Cyber criminals use various email spam campaigns and unofficial software download sources. Spam campaigns are used to send hundreds of thousands of emails with malicious attachments and deceptive messages encouraging users to open. These attachments are usually presented as some important documents (invoices, receipts, bills, etc.) Yet this is a mere trick to create the impression of legitimacy. Third party software download sources (torrents, eMule, freeware download websites, free file hosting sites, etc.) are used to present malicious executables as legitimate software - again, users get tricked into downloading and executing malware manually. Now the dropper designed to inject Zumanek works as follows. As mentioned above, the dropper checks if system's locale is pt-br. Moreover, this malware checks for present anti-virus/anti-spyware suites, including AVAST, COMODO, 360 Total Security and whether the system environment is "sandboxed". If the system locale is not pt-br and anti-virus suite or sandbox environment is detected, then the is terminated immediately. After downloading Zumanek (which is archived), dropper extracts it and checks if all downloaded executables/DLL files aren't damage. If everything is "fine", then malware is executed. If not, dropper changes Zumanek's files status to "hidden" and also terminates itself. Ultimately, the main reasons for this computer infection are poor knowledge and reckless behavior.

How to avoid installation of malware?

The key to computer safety is caution. Therefore, it is extremely important to pay close attention when browsing the Internet and downloading/installing/updating software. Carefully analyze every single email attachment received. Files/links that are irrelevant and those received from suspicious/unrecognizable email addresses should never be opened. Download software only from official sources, using direct download links. Third party downloaders/installers often include rogue applications, which is why such tools should never be used. Similar rules apply to software updates. Keep installed applications/operating system updated. To achieve this, however, use only implemented functions or tools provided by the official developer. Lastly, always be sure to have a reputable anti-virus/anti-spyware suite installed and running - these tools will help you to detect and eliminate malware before the system is harmed. If you believe that your computer is already infected, we recommend running a scan with Spyhunter for Windows to automatically eliminate infiltrated malware.

List of banks and crypto companies (cryptowallets) targeted by Zumanek:

  • BANCOORIGINAL
  • BANCORENDIMENTO
  • BANESTES
  • BANPAR
  • BANRISUL
  • BBCOMBR
  • BITCOIN
  • BLOCKCHAIN
  • BRADA (ie: BRADESCO)
  • CASHIER
  • CITIBANK
  • FOXBIT
  • HSBC
  • ITA (ie: ITAU)
  • MERCADOBITCION
  • SANTA (ie: SANTANDER)
  • SICOOB
  • SICREDI
  • UNICRED

List of Zumanek's commands:

ABRIRCHROMEABRIRCHROME; ABRIRFIREFOX; ABRIRIEXPLORER; ATIVAKEYLOG; AtivaAERO; BANRISULSENHA; BBFISICASENHA8; BBFISICASENHACONTA; BBGFSENERATED; BBGFSENHACONTA; BLOCK BANRISUL; BLOCK CITIBANK; BLOCK SICOOB; BLOCKBANESTES; BLOCKBB; BLOCKED; BLOCKEDUNICRED; BLOCKOUT; BLOCKOUTHSBC; BLOQUEARSICREDI; BRADACHAVE; BRADAPOSICAOTABELA; BRADATOKEN; CANCELATELA; CEFASSINATURA; CHANGE BMP; CLOSEBROWSERS; CLOTHING; COLARDATA; CRIARDESKTOP; DELETARKL; DESATIVAKEYLOG; DESATIVATRUSTEER; DETAILSHOW; DETONARPC; DISABLED; ENIVARAJUSTEXY; ENIVARCLIQUEARRASTA0; ENIVARCLIQUEARRASTA1; ENIVARCLIQUEINVERSO; ENIVARMOUSEMOVE; ENIVARTEXTO; ENVELOPE; ENVELOPES; ENVIARAUTOGETHANDLES0; ENVIARAUTOGETHANDLES1; ENVIARDESCONECTAPHOTO; ENVIARINTERVALOMOVEMOUSE; ENVIARMESSAGEBOX; EXECUTARPCHUNTER; FECHARINFO; FECHARKL; FINALIZARINFO; HIDE BROADCASTS; ITADATANASCIMENTO; ITAFISICASENHA; ITAFISICASMSTOKENITAFISICASMSTOKEN; ITAFISICATOKEN; ITATABELA; LIBERAATUALIZA; LIST OF MODULES; LISTARDESKTOPS; LISTARHANDLES; MATAHOOK; MAXIMIZARBROWSER; MINIMIZARBROWSER; RECEBERDADOSKEY; RECONECTEDMARKET; RESETARKL; RESTART; RESTARTKL; SANTAASSTOKEN; SANTAINSINATURA; SANTASMSTOKEN; SANTASOTOKEN; SANTATABELA; SANTATOKEN; SEND TO A PHOTO; SEND TO FRIENDLY; SETARHANDLEALVO; SETBROWSER; SHOWCASE; SICOOBASSINATURA; SICOOBSENHA4; SICOOBSENHA6; SICOOBTOKEN; SICREDIASSINATURA; SICREDITOKEN; TIPOPRINT; TRAVAGENERICA; TRAVAUPD; TYPEFOTO; UNICREDASSINATURA; UNICREDITOKEN; UPDATE; UPDATE MODULE; UPDATED; UPDATES; UPDATESICREDI; XYRECORTE

Screenshot of Zumanek's detections in VirusTotal:

Zumanek trojan in VirusTotal

Instant automatic removal of Zumanek virus: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of Zumanek virus. Download it by clicking the button below:
▼ DOWNLOAD Spyhunter By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

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How to remove malware manually?

Manual malware removal is a complicated task, usually it's better to let antivirus or anti-malware programs do it automatically. To remove this malware we recommend using  Spyhunter 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's an example of a suspicious program running on 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 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 "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 Autoruns application and locate the malware file that you want to eliminate.

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

locate the malware file you want to remove

After removing the malware through Autoruns application (this ensures that the malware won't 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 file 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 help remove any malware from your computer. Note that manual threat removal requires advanced computer skills, it's recommended to leave malware removal to antivirus and anti-malware programs. These steps might not work with advanced malware infections. As always it's better to avoid getting infected that try to remove malware afterwards. To keep your computer safe be sure to install latest operating system updates and use antivirus software.

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