How to remove malware that was installed via Print Works malspam email?

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

Print Works email virus removal guide

What is Print Works email virus?

Malspam is a way to deliver emails that contain infected files (attachments) or download links for them. As a rule, such emails are disguised as official, important letters from legitimate companies. The main purpose of cyber criminals behind malspam emails is to trick recipients into downloading and executing a malicious file that is designed to install malicious software. In this particular case the attached document is designed to install Dridex.

Print Works email virus malware-spreading email spam campaign

This malspam email is disguised as a letter regarding some invoice from the company named Print Works. It has a malicious MS Excel document attached to it. As mentioned in the introduction, the file attached to this email is designed to distribute (install) a malicious software called Dridex (also known as Bugat and Cridex). This malware is capable of stealing banking credentials, if functions as banking malware. It steals the aforementioned credentials by logging keystrokes - recording keyboard input. Collected data can include not only banking credentials but also other sensitive information (like usernames, passwords for other types of personal accounts). Therefore, obtained information could be misused not only to make fraudulent purchases, transactions, but also to steal identities, other accounts, and for other malicious purposes. Additionally, Dridex is capable of performing injection attacks. More precisely, it can be used to infect computers with other malware and/or execute remote commands or inject code into a specific software and alter its behaviour.

Threat Summary:
Name Dridex malware
Threat Type Password-stealing virus, banking malware
Hoax An email is disguised as a letter regarding a monthly invoice from Print Works
Attachment(s) Invoice_311647_209812.xlsm (its name may vary)
Detection Names (Invoice_311647_209812.xlsm) AegisLab (Trojan.ZIP.Dridex.4!c), BitDefender (VBA.Heur2.Dridex.5.16CA3645.Gen), ESET-NOD32 (VBA/TrojanDownloader.Agent.UVW), Kaspersky (HEUR:Trojan-Downloader.MSOffice.SLoad.gen), Full List Of Detections (VirusTotal)
Symptoms Malicious programs like Dridex 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 Dridex
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.
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.

To sum up, opening the attachment in this email could lead to serious problems like monetary and/or dat loss, identity theft, loss of access to a variety of personal accounts, problems related to online privacy, and/or other serious problems. Therefore, this and other similar emails should never be trusted. More examples of malspam campaigns are "DUNCAN ENGINEERING LIMITED ORDER Email Virus", "Mondiale della Sanita - Italia Email Virus" and "TNT EXPRESS Email Virus".

How did "Print Works email virus" infect my computer?

The file (MS Excel document) attached to this malspam installs Dridex malware if recipients open it and enable content/editing (macros commands). Although, if that document is opened with MS Office version that was released before year 2010, then it infects a computer with the aforementioned malware automatically. It is because older MS Office versions do not include the Protected View mode. Some more examples of files that cyber criminals can use in their malspam campaigns are other Microsoft Office documents (e.g., Word), PDF documents, archive files like RAR, ZIP, executable files (like .exe), JavaScript files.

How to avoid installation of malware?

Links and files (attachments) in irrelevant emails should not be opened, especially if such emails are sent from unknown, suspicious addresses. Very often emails of this kind are sent by cyber criminals who attempt to deceive recipients into infecting their computers with some malicious software. Programs and files should be downloaded from official pages and via direct links. Unofficial pages, third party downloaders (and installers), freeware download sites, Peer-to-Peer networks like torrent clients, eMule, etc., can be used as tools to distribute malicious files/programs. Installed programs have to be updated and/or activated with implemented functions (or tools) that are designed/provided by their official developers. None of the third party, unofficial tools should be used neither to update or activate any programs. Also, it is not legal to activate licensed software with unofficial tools or use installers for pirated software. Additionally, a computer should be scanned for malware or other types of threats regularly, it should be done by using an up-to-date and reputable antivirus or anti-spyware software, such software should be always up to date. If you've already opened "Print Works email virus" attachment, we recommend running a scan with Malwarebytes for Windows to automatically eliminate infiltrated malware.

Text presented in the "Print Works email virus" email letter:

Subject: re-send Invoice 311647

Dear Customer,

your monthly invoice for Print Works is available

Sincerely,
Accounts Payable

Malicious attachment distributed via Print Works email virus spam campaign:

Malicious attachment distributed through Print Works email virus spam campaign

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:
▼ DOWNLOAD Malwarebytes By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. To use full-featured product, you have to purchase a license for Malwarebytes. 14 days free trial available.

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 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 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 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.

Our malware removal guides are free. However, if you want to support us you can send us a donation.

Malware activity

Global malware activity level today:

Medium threat activity

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

QR Code
Dridex 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 Dridex malware on your mobile device.
We Recommend:

Get rid of Windows malware infections today:

▼ REMOVE IT NOW
Download Malwarebytes

Platform: Windows

Editors' Rating for Malwarebytes:
Editors ratingOutstanding!

[Back to Top]

To use full-featured product, you have to purchase a license for Malwarebytes. 14 days free trial available.