Ursnif Trojan

Also Known As: Gozi virus
Type: Trojan
Distribution: Moderate
Damage level: Severe

Ursnif virus removal guide

What is Ursnif?

Ursnif (also known as Gozi, IFSB or Dreambot) is high-risk trojan-type virus designed to record various sensitive information. This virus typically infiltrates systems without permission, since developers proliferate it using spam email campaigns (e.g., "TicketSales Email Virus", "Swisscom Email Virus", etc.) and fake Adobe Flash Player updaters promoted via deceptive websites. These sites are notorious for the promotion of various adware-type applications.

Ursnif malware

Immediately after infiltration, Ursnif records user-system information, such as keystrokes, saved logins/passwords, web browsing activity, system information, and so on. Therefore, Ursnif's developers might gain access to personal accounts for social networks, banks, emails, etc. These people aim to generate as much revenue as possible. Therefore, there is a high probability that hijacked accounts will be misused through online purchases, money transfers, and so on. This behavior can lead to serious privacy issues and significant financial loss. Be aware that Ursnif is also capable of performing a number of actions on the system (e.g., steal/clear cookies, reboot the system, take screenshots, etc.). More importantly, this virus is capable of the downloading and installing other executables. Therefore, the presence of Ursnif might lead to various system infections. Fortunately, many anti-virus suites are capable of detecting and eliminating Ursnif from the system. Therefore, if you suspect that your system is infected with Ursnif, immediately scan it with a reputable anti-virus program and eliminate all threats. In addition, remove all dubious applications and browser plug-ins (as mentioned, deceptive websites are likely to promote adware-type apps).

Threat Summary:
Name Ursnif, Gozi, Dreambot
Threat Type Trojan, Password stealing virus, Banking malware, Spyware
Detection Names Avast (Win32:Trojan-gen), BitDefender (Trojan.GenericKD.41139347), ESET-NOD32 (A Variant Of Win32/Kryptik.GRGV), Kaspersky (Trojan-Spy.Win32.Ursnif.agux), Full List (VirusTotal)
Malicious Process Name(s) click.exe (the process name may vary).
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, 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.
▼ Download Malwarebytes
To use full-featured product, you have to purchase a license for Malwarebytes. 14 days free trial available.

There are many trojan-type viruses similar to Ursnif available online, inluding TrickBot, FormBook, Hancitor, LokiBot, Emotet, etc. Some distribute malware, whilst others record information, perform malicious actions, etc. The behavior differs slightly, but these viruses remain very similar. All pose a direct threat to your privacy and computer safety. Therefore, viruses such as Ursnif must be eliminated immediately.

How did Ursnif infiltrate my computer?

As mentioned above, Ursnif is proliferated using spam email campaigns and fake software (Adobe Flash Player) updaters. Spam campaigns deliver messages encouraging users to open various malicious documents (in most cases, Microsoft Office documents). Once opened, they download and install Ursnif onto the system. Fake system update tools infect computers by exploiting old software bugs/flaws or downloading and installing malware rather than promised updates. Note that these updaters are promoted by malicious sites that deliver messages claiming that certain software is outdated (even when it is not).

How to avoid installation of malware?

To prevent this situation, be very cautious when browsing the Internet and updating software. Think twice before opening email attachments. If the file is irrelevant/unexpected or has been received from a suspicious email address, do not open it. Furthermore, keep installed applications and operating systems up-to-date. To achieve this, use implemented functions or tools provided by the official developer only. Having a reputable anti-virus/anti-spyware suite installed and running is also paramount, since these tools are likely to detect and eliminate malware before malicious actions are performed. The main reasons for computer infections are poor knowledge and careless behavior - the key to safety is caution. If you believe that your computer is already infected, we recommend running a scan with Malwarebytes for Windows to automatically eliminate infiltrated malware.

Text presented within a spam campaign that distributes Ursnif:

Purolator have a package for you!
How to get your package in one piece
Please follow the steps below.
Download the Purolator Label containing your tracking number.

After downloading your label,open the label information and locate your tracking number. You may reschedule a redeliver from us or arrange a pick up from our location.

Ursnif (also known as Gozi) trojan's process ("click.exe") in Windows Task Manager. The name may vary depending on the malware's variant:

Gozi trojan process in Windows Task Manager

Update January 25, 2019 - Cyber criminals are distributing Ursnif trojan using malicious MS Word documents. These files, once opened, ask to enable macro commands. The attachment contains a macro command that executes a base64 PowerShell command. This follows by execution of another PowerShell command which connects to a remote Command & Control server and downloads, and executes Ursnif.

Screenshot of the malicious MS Word attachment:

Ursnif trojan distributing word document

Yet another malicious Microsoft Word document ("info_03_18.doc") used to inject Ursnif (Gozi) trojan into the system:

Gozi (Ursnif) trojan-injecting MS Word document

Example of an Polish invoice-related spam email that delivers a malicious Microsoft Excel document ("faktura_10.xls") which injects Ursnif into the system:

Polish spam email used to spread Ursnif trojan

Text presented within this email:

Subject: FSF2/2020/2317 wystawiony przez Akapit

Witam, W zwiazku z nasza rozmowa telefoniczna dokonalismy transferu na panstwa konto 196928 zl. Jest to oplata faktury wystawionej przez Panstwa firme dnia 2020.03.15. Zalaczam skan potwierdzenie dokonania wplaty jeszcze dzis zadzwonimy do Panstwa w celu potwierdzenia otrzymania srodkow.
Z poważaniem,
 
Galbierz Agata
 
Akapit
 
Akapit, 26-868
KRS 8357532616,
NIP 516-223-79-96, Regon 652243344

Screenshot of the malicious MS Excel document:

Malicious MS Excel document used to inject Ursnif trojan into the system

Example of a spam email (fake dating email written in Italian) used to spread Ursnif trojan:

Ursnif/Gozi-distributing spam email

Text presented within this email:

Subject: dating

Hi ! Sto gladiolo il tuo lettera dell'alfabeto . Faccio non compos mentis orso la tua fotografia . Air me delight ! perchй, tu padre "t conoscente qualsiasi cosa quasi te stesso. Conoscenza me. Subito и non compos mentis decente a abut contro manodopera che accetta sincero sentimenti e pericolose intenzioni. Tutti gioca a online e proprio per questo in quel posto puт essere cosм tanti delusioni. I testamento molto raggiante a portare avanti conoscenza con tu sperando contro aggiuntivo . Io circa abhor bugie e dissimulazione in qualunque famiglia rapporto . io promessa tu lasciare preoccupato interessato a conoscere circa me. Il mio nome и Nataliya. io ho 42 anni ex , io vivo in Ucraina. La mia altezza и di 168 sm. Il mio peso и 52 kg. Faccio non compos mentis beverage e faccio non compos mentis smoke. I orso not stato matrimoniale e accetta figli. tu stanza da bagno domanda me: cosa tipo di mortale sto cercando for? Quale geniale di sogno ad occhi aperti ? I testamento accomodarsi con uno rispondi a due domande. io assenza a scoperta un affidabile mortale in animazione . Io voglio il mio maschio adulto a botto me al 100%. Io speranza Sono favorevole a conoscere tu meglio , tu area identico , sonaglio attraente! In attesa contro il tuo lettera dell'alfabeto . stanza da bagno comporre alla mia e-mail smart@meeticemail.com Nataliya.
Il mio foto galleria  hxxp://imaggi.kapswholesale.net/zpgwhujskwh
password : 12345

Update April 8, 2020 - Ursnif malware's multistage distribution technique has changed. The distribution campaign's first stage remains the same - infection is initiated by malicious macro commands via infectious Microsoft Office document. The document titled "info_03_24.doc" is similar to ones used in previous campaigns (e.g. "info_03_18.doc"). However, previously PowerShell was employed in the second stage, now mshta is used instead. More information on these developments can be found in an article by Sahil Antil and Kumar Pranjal Shukla on zscaler.com.

Yet another malicious MS Excel document ("MAY4__60.xls") used to inject Ursnif into the system:

Ursnif trojan-spreading MS Excel document (MAY4__60.xls)

Screenshot of yet another spam email (written in Italian) which distributes a malicious Microsoft Excel document designed to inject Ursnif trojan into the system:

Spam email used to spread Ursnif trojan (2020-05-25)

Text presented within:

Subject: Il tuo ordine 1177302 e stato completato


Gentile cliente,

Il tuo ordine di acquisto stato comunicato all'esercente che povvedera ad evaderlo in base alle condizioni di vendita definite.
La conferma definitiva dell'acquisto la riceverai direttamente dall'esercente, che potra confermarla o annullarla.

Dati del negozio
Codice Esercente: WEB_007798811
Per scaricare i file da lei acquistati in formato digitale,
deve loggarsi a questo file : pagamento_ID.xls
Dati del pagamento
Data e ora: 5/25/2020  3:11:20 AM
Divisa: EUR
Importo: 189,00

Codice XPay attribuito all'ordine di pagamento: YI459UKNB6147681
Codice autorizzativo assegnato dal circuito di pagamento: 41029892

Screenshot of the attached MS Excel document:

Ursnif trojan-spreading malicious MS Excel document

Yet another malicious MS Excel document ("infoinvoice_865092.xls") designed to inject Ursnif trojan into the system:

Ursnif trojan-spreading MS Excel document (infoinvoice_865092.xls)

Screenshot of yet another malicious Microsoft Excel document ("DHL_Fattura_cash_991049_2_9603.xlsm") designed to inject Ursnif trojan into the system:

Ursnif trojan-spreading MS Excel document (DHL_Fattura_cash_991049_2_9603.xlsm)

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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Removal Instructions in other languages
Malware activity

Global malware activity level today:

Medium threat activity

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

QR Code
Gozi virus 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 Gozi virus on your mobile device.
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