Invoice Attached - FINAL NOTICE Email Virus

Also Known As: Final invoice notice virus
Type: Trojan
Damage level: Severe

Invoice Attached - FINAL NOTICE removal guide

What is Invoice Attached - FINAL NOTICE?

"Invoice Attached - FINAL NOTICE" is another spam email campaign used to distribute a high-risk trojan called TrickBot. It is very similar to "Payroll Timetable Email Virus", "Companies House Email Virus", and many others. Cyber criminals often send thousands of deceptive emails encouraging users to open attached Microsoft Office documents, however, this results in infiltration of TrickBot.

Invoice Attached - FINAL NOTICE malware

This campaign's email messages claim that users have outstanding payments and encourages them to check attached "invoices" for detailed information. This is a scam. The opened attachment infiltrates TrickBot into the system. Note that the email may seem official. It is very common for cyber criminals to claim to be employees of legitimate companies and governmental agencies. They do this to increase the number of infections. Users are much more likely to open files that are received from familiar names. TrickBot is a high-risk trojan designed to record account credentials. It modifies visited websites so that all entered logins/passwords are saved to a remote server controlled by cyber criminals. These people aim to generate as much revenue as possible. Therefore, they are likely to misuse hijacked accounts for banks, social networks, etc. The presence of TrickBot trojan can thus lead to serious privacy issues and significant financial loss. If you have already opened "Invoice Attached - FINAL NOTICE" campaign's attachments, there is a high probability that your computer is infected. Therefore, we strongly advise you to scan it with a reputable anti-virus/anti-spyware suite and eliminate all threats.

Threat Summary:
NameFinal invoice notice virus
Threat TypeTrojan, Password stealing virus, Banking malware, Spyware
SymptomsTrojans are designed to stealthily infiltrate victim's computer and remain silent thus no particular symptoms are clearly visible on an infected machine.
Distribution methodsInfected email attachments, malicious online advertisements, social engineering, software cracks.
DamageStolen 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 Combo Cleaner.
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TrickBot shares many similarities with dozens of other trojan-type viruses distributed using spam campaigns. The list of examples includes (but is not limited to) FormBook, Hancitor, Adwind, and Emotet. Their behavior might be different (some cause chain infections, others record information, and so on), but all pose a direct threat to your privacy and computer safety. Eliminate them immediately.

How did Invoice Attached - FINAL NOTICE infect my computer?

The "Invoice Attached - FINAL NOTICE" campaign delivers a deceptive MS Office document, which once opened, asks victims to enable macro commands so that the content can be displayed properly. In doing so, users inadvertently grant attachments permission to execute commands that infiltrate TrickBot into the system. This malware distribution method is simple and effective, but has a major flaw. Attachments are only able to download malware if the user opens them with programs from the Microsoft Office suite. For example, if the .doc file is opened using any app other than Microsoft Word, the malware will not be downloaded. In addition, TrickBot works only on the Microsoft Windows Operating System. Users of other platforms are safe.

How to avoid installation of malware?

The main reasons for computer infections are poor knowledge and careless behavior. The key to safety is caution. Therefore, pay attention when browsing the Internet. Think twice before opening email attachments. If the file has been received from a dubious email address and is not relevant, do not open it. Have a legitimate anti-virus/anti-spyware suite installed and running. These tools can detect and eliminate infectious files before they do any damage. Note that 2010 and newer versions of MS Office open newly-downloaded documents in "Protected View" mode. This prevents malicious documents from infecting the system. If you have already opened a "Invoice Attached - FINAL NOTICE" attachment, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate infiltrated malware.

Text presented in the "Invoice Attached - FINAL NOTICE" email message:

Subject: Invoice Attached - FINAL NOTICE

This is to inform you that there is still an outstanding payment of £203. We would appriciate it if this could be settled no later than the 30th.
I have attached the current invoice and the password for the document is: 1234
Thank you.
Shona Dyck

Registered in England & Wales.
Registered Office: The Apex 2 Sheriffs Orchard Coventry CV1 3PP.
Registered Company Number: 5104383.
VAT Number: 888 2461 77

Attachment: invoice.doc

Malicious attachment distributed via "Invoice Attached - FINAL NOTICE" spam campaign:

Malicious attachment distributed through Invoice Attached - FINAL NOTICE spam campaign

Text presented within this file:


1. Open the document in MS Office. Previewing online does not work for protected documents.
2. Use a PC/Desktop. Protected document doesn’t work on a mobile phone.
3. Since you have downloaded this document Online, you will need to click “Enable Editing” or “Enable Macro” and then click “Enable

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
▼ DOWNLOAD Combo Cleaner 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 Combo Cleaner. 7 days free trial available.

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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 Combo Cleaner Antivirus 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 "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, 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 Combo Cleaner Antivirus for Windows.

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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.

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