Dridex virus removal guide
What is Dridex?
Dridex (also known as Bugat and Cridex) is a malicious program that is used to steal banking credentials from users of Windows computers. Cyber criminals proliferate this rogue software when it is downloaded and installed through a malicious Microsoft Word or Excel document. Once installed, it targets banking information. Therefore, users with computers infected by Dridex are likely to experience financial loss.
The main goal of this malware is to steal sensitive details relating to victims' bank accounts, such as online banking credentials. Therefore, this malicious software helps distributors and cyber criminals to access victims' bank accounts and make fraudulent transactions - effectively stealing money from unsuspecting people. This malicious software operates as a key logger and records keystrokes (keys pressed). Cyber criminals seek to infect computers with these key loggers so they can steal logins, passwords, and other sensitive details, including banking credentials. This program is also capable of performing several 'injection attacks'. These attacks allow injection of malware into a computer system to execute remote commands or inject code into a specific program and modify its execution/behavior. Furthermore, the latest Dridex variant is difficult to detect, since it is capable of evading anti-virus detections. It uses file signatures that go undetected as threats, and thus Dridex bypasses virus detection engines. Additionally, this malware uses an Application Whitelisting technique to block elements of WSH (Windows Script Host). It takes advantage of a WMIC (WMI command-line) flaw by targeting a weak spot (execution policy) in the application whitelisting process. To bypass mitigation efforts, Dridex malware loads XLS scripts that contain malicious Visual Basic Script. In summary, this is advanced malware, which is goes undetected. If you have reason to believe that your computer is infected with Dridex, remove it immediately.
|Threat Type||Trojan, Password-stealing virus, Banking malware, Spyware|
|Detection Names||Avast (Win32:Trojan-gen), BitDefender (Trojan.GenericKD.41400500), ESET-NOD32 (Win32/Dridex.CO), Kaspersky (Trojan.Win32.Chapak.druk), Full List (VirusTotal)|
|Payload||Banking trojan, keylogger|
|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.|
|Distribution methods||Infected email attachments and compromised FTP websites.|
|Damage||Stolen banking information, logins, passwords. Injection attacks.|
|Additional Information||The latest Dridex version is capable of avoiding detection by virus detection engines.|
|Malware Removal (Windows)||
To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Malwarebytes.
There are a number of malware infections used to steal personal details. Some examples are Emotet, Adwind, FormBook, and AZORult. Typically, cyber criminals spread these programs to generate revenue by stealing personal details, distributing other malware such as ransomware, and so on. These programs can cause serious problems (financial, data loss, privacy issues, etc.). For this reason, it is important to eliminate them immediately.
How did Dridex infiltrate my computer?
How to avoid installation of malware?
Be careful with files that are attached to emails received from suspicious or unknown email addresses. Typically, these emails are irrelevant and disguised as 'important'. The best way to deal with them is to ignore them and leave files and links within them unopened. Download software and files from official websites and use direct download links. Third party downloaders, unofficial websites, various Peer-to-Peeer networks should not be trusted. Downloading files or programs via these sources might lead to computer infections. Keep installed programs and operating systems up-to-date, however, use implemented functions or tools created by official developers only. Do not activate installed programs with 'cracking' tools, since this is illegal and they are often designed to distribute malicious programs (infect computers with malware). Have a reputable anti-virus or anti-spyware suite installed and enabled at all times. If you believe that your computer is already infected, we recommend running a scan with Malwarebytes for Windows to automatically eliminate infiltrated malware.
Screenshot of an email that contains a malicious attachment, which is used to spread Dridex:
Screenshot of another spam email used to spread Dridex malware:
Text presented within this email:
Subject: Invoice Due #7300980
Attached is the invoice for the work completed at your property. Payment should be remitted to the invoice below. We appreciate your business.
For security reason the invoice is password protected: 159
Should you have any questions, please do not hesitate to contact us.
Jess Tiffani RSW, CCAC, ICADC, CEC
Pegasus Recovery Solutions
a: 270 - 2950 Douglas St, Victoria BC, V8T 4N4
Screenshot of the malicious attachment (Microsoft Word document):
Update April 22, 2020 - Crooks have recently started yet another spam campaign disguising as UPS delivery company. They send deceptive emails encouraging recipients to open a malicious document which is presented as an invoice. Once opened, the document executes a number of commands in order to inject Dridex malware into the system.
Screenshot of the malicious MS Excel document ("sample20200420-01.xls"):
Update April 28, 2020 - Crooks have recently started a Fedex-related email spam campaign to promote Dridex malware.
Screenshot of the aforementioned spam email:
Text presented within:
Subject: FedEx Billing - Invoice Ready for Payment
You have a FedEx invoice ready for payment.
Your invoice is ready for payment
Your account has a new invoice(s) from FedEx ready for payment.
Invoice number: Invoice amount:
Thank you for your business,
Screenshot of the malicious attachment - Microsoft Excel document ("4 224 99898.xls"):
Another malicious MS Excel document ("3867768142337.xls") designed to inject Dridex malware into the system:
Examples of other invoice/payment/bill-relating spam emails that spread Dridex malware by delivering links that lead to malicious websites/files:
Screenshot of yet another spam campaign used to spread Dridex malware:
Text presented within:
Subject: Invoice 00058077
We appreciate your prompt attention and payment of this invoice at your earliest convenience.
The invoice is attached.
Invoice Due Date: 05/20/2020
Invoice Total Amount: $1,339.00
Billing and Payments 888.433.8686
Screenshot of the malicious MS Excel attachment ("Invoice_00588844_1037775437942.xlsm") which injects Dridex into the system:
Another malicious MS Excel document used to spread Dridex malware:
Example of a DHL-themed spam email used to distribute Dridex malware:
Text presented within:
Subject: DHL Shipment Successful, Pickup Failure: Waybill 3232603305
PLEASE DO NOT REPLY TO THIS EMAIL
Thank you for using DHL
This email contains the following attachments:
1 set of DHL Transport Label and Waybill Document.
1 shipment receipt.
1 customs invoice (only if requested).
What do I print?
A. If you are sending documents please print all pages of the Transport Label and the Waybill Document. Attach the Transport Label to your shipment and give the Waybill Document to the courier.
B. If you are sending non-documents please attach:
All pages of the Transport Label (provide Waybill Document to the courier separately).
Two copies of the customs document.
If you have a shipment with multiple pieces the attached will include a Transport Label for each piece. Please ensure that all other documentation is attached to piece '1' (listed on the label).
CONFIDENTIALITY REMINDER: This e-mail message, together with any attachments, is for the exclusive and confidential use of the addressee(s) and may contain legally privileged information. Any unauthorized review,use, disclosure or distribution is strictly prohibited. If you are not the intended recipient, please contact the sender by reply -email and destroy all copies of the original message from your end.
Screenshot of a malicious MS Excel document (which injects Dridex into the system) attached to this email:
Example of yet another spam email used to spread Driex malware via attached MS Excel document:
Text presented within:
Subject: Past Due Invoice No. #851344
We received payment for invoice #921809, however due to a credit, there was a $95.00 overpayment and also there is 1 open invoice #182710 in the amount of $206.00 that we could apply this overage to IF payment has NOT yet been submitted. If it has, we will issue a refund.
Please let me know how you would like to proceed.
Accounting Analyst| Cammi Xylina
Phone: (980) 238-2305
Screenshot of the attached document:
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:
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:
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:
Download a program called Autoruns. This program shows auto-start applications, Registry, and file system locations:
Restart 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.
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.
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.
Video showing how to start Windows 10 in "Safe Mode with Networking":
Extract the downloaded archive and run the Autoruns.exe file.
In 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.
Check 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".
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.
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.