Avoid installation of the Kryptik trojan via "WeTransfer" email

Also Known As: WeTransfer email spam virus
Type: Trojan
Distribution: Low
Damage level: Severe

"WeTransfer" removal guide

What is "WeTransfer"?

"WeTransfer" is the title of a deceptive email, designed to spread the Kryptik trojan. However, it may also be used to spread other malicious programs as well. It is strongly advised against opening this letter, especially the links found therein - as that will trigger the installation of the aforementioned malware.

WeTransfer email

The text presented in "WeTransfer" email is brief and simply informs recipients that they have been sent a document concerning the unspecified company's profile and purchase/order details ("Our company profile as requested and Purchase Order.pdf"). The letter is not bogged down in details, thereby it does not play with extreme emotions (e.g. fear or happiness). However, users may be tricked into downloading the archived file under the aforementioned title - simply from confusion or curiosity. It is not uncommon for cyber criminals to mentioned and/or use legitimate services for their malicious purposes. Both WeTransfer and ownCloud are genuine services (file transfer and hosting respectively) - which are grievously misused by the individuals behind this spam campaign. At the time of research, the link in the "WeTransfer" email opened an ownCloud webpage, from which the file containing Kryptik trojan could be downloaded. This is a high-risk malware with a wide range of abilities, including (but not limited to): system and browser modification, control over connected hardware and data exfiltration. To summarize, Kryptik is likely to cause severe privacy issues, significant financial losses and even identity theft. To protect device and user safety, it is crucial to eliminate all malicious programs without delay.

Threat Summary:
Name WeTransfer email spam virus
Threat Type Trojan, password-stealing virus, banking malware, spyware.
Hoax Email claims recipients have been sent company and purchase details as per their request.
Attachment(s) Download link of "Our company profile as requested and Purchase Order_PDF.cab" (malicious executable inside)
Detection Names
Avast (Win32:TrojanX-gen [Trj]), Fortinet (MSIL/Kryptik.UGA!tr), ESET-NOD32 (A Variant Of MSIL/Kryptik.UGA), Kaspersky (HEUR:Trojan-Dropper.Win32.Generic), Full List Of Detections (VirusTotal)
Symptoms Trojans are designed to stealthily infiltrate the victim's computer and remain silent, and thus no particular symptoms are clearly visible on an infected machine.
Payload Kryptik
Distribution methods Infected email attachments, malicious online advertisements, social engineering, software 'cracks'.
Damage Stolen passwords and banking information, identity theft, the victim's computer added to a botnet.

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

Social engineering and scare tactics are usually employed to further deceptive/scam emails. These letters are typically disguised as "official", "important", "priority", "urgent" and so on. The subject matter varies drastically, the written content can be well-researched and detailed or sloppy and hastily put together. Hence, emails riddled with grammatical errors and spelling mistakes, as well as other inconsistencies - should call the legitimacy of the letter immediately into question. The only goal of this deceptive mail is to generate revenue at user expense. This purpose can be achieved via malware infections, by tricking recipients into revealing their personal details (e.g. information relating to identity, banking account or credit card details, etc.) or making monetary transactions (e.g. blackmail for existing or nonexistent compromising material, various fake fees or payments, etc.) and many other scamming techniques. Systems are infected through attached files or links, leading to to the download of such. "Your computer hacked!", "Christmas Party Email", "HARASSMENT COMPLAINT" are a few examples of emails, used to proliferate malware. The Kryptik malicious software, spread through "WeTransfer" email spam campaign, shares similarities with EmotetTrickBotAdwind and countless other trojans.

How did "WeTransfer" infect my computer?

Deceptive/Scam mail infects systems via virulent files, which can be attached to it or linked inside the letter. The latter is the case with the "WeTransfer" email. Infectious files come in variety of formats, e.g. archive (CAB, ZIP, RAR, etc.) and executable (.exe, .run, .etc.) files, Microsoft Office and PDF documents, JavaScript and others. When these files are executed, run or otherwise opened - the infection processes is initiated; in other words, they begin downloading/installing malware. For example, upon opening - Microsoft Office documents request users to enable macro commands (i.e. to enable editing), enabling them can trigger an infection. However, in MS Office versions released prior to the year 2010 - macros are enabled automatically, once the document is opened.

How to avoid installation of malware?

Suspect and/or irrelevant emails should not be opened, especially ones received from unknown senders (addresses). Any attached files (or links) found in suspicious letters - must never be opened, as they are a potential origin of an infection. It is highly recommended to use Microsoft Office versions released after 2010. The newer releases have "Protected View" mode, which prevents malicious macros from immediately initiating the infection process when the document is opened. Malicious content can also be downloaded from untrustworthy download channels, e.g. unofficial and free file-hosting websites, Peer-to-Peer sharing networks (BitTorrent, eMule, Gnutella, etc.) and other third party downloaders. Therefore, only official and verified download sources should be used. Illegal activation ("cracking") tools and third party updaters can also cause infections; hence, programs should be activated and updated with tools/functions provided by legitimate developers. To ensure device integrity and by extension - user safety, it is paramount to have a reputable anti-virus/anti-spyware software installed and kept up-to-date. Furthermore, this software is to be used for regular system scans and removal of detected threats/issues. If you've already opened the file downloaded from the website accessed via "WeTransfer" email, we recommend running a scan with Spyhunter for Windows to automatically eliminate infiltrated malware.

Text presented in the "WeTransfer" email letter:

Click 'Download images' to view images
sent you some documents PDF
2 item, 768 KB in total ・ Will be deleted on 30 October, 2019
Our company profile as requested and Purchase Order.pdf

Get your files
Download link
2 items
Company profile.pdf
Purchase Order.pdf
700 KB
To make sure our emails arrive, please add noreply@wetransfer.com to your contacts.
About WeTransfer ・ Help ・ Legal ・ Report this transfer as spam

Screenshot of the website opened via link in "WeTransfer" email:

Site linked in WeTransfer email

Screenshot of detections on malware database VirusTotal of "Our company profile as requested and Purchase Order_PDF.cab" (archived file containing the Kryptik's executable):

Detections of file downloaded from the website of WeTransfer email (VirusTotal)

Another variant of "WeTransfer" spam email:

WeTransfer email spam campaign (February 13, 2020)

Text presented within this email:

Subject: You have successfully received files Via Wetransfer

files sent to
6 files, 120 MB in total · Will be deleted on&n=sp;0th Feb, 2020
Download files here

Thanks for using WeTransfer. We'll email you a confirmation as soon=as your files have been downloaded.
Download link

Hi - please download files here. Thx.

To make sure our emails arrive, please add noreply@wetransfer.com to your contacts.

Screenshot of the website promoted via this mail:

Website promoted using WeTransfer email spam campaign (February 13, 2020)

Text presented within this site:

Help About Sign up Log in

Ready when you are

Files deleted in 7 days


Hi, regarding my earlier mail. These are the documents,Invoices and materials...


40 MB - pdf

23 MB - zip

Mov Intro.mp4
76 MB - mp4



Instant automatic removal of WeTransfer email spam 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 WeTransfer email spam 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.

Quick menu:

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 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 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 1Download 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 "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 Spyhunter 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
WeTransfer email spam virus QR code
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Platform: Windows

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