Also Known As: Addax Engineering bid purchase document virus
Type: Trojan
Distribution: Low
Damage level: Severe



"BID PURCHASE DOCUMENT" is a spam email campaign used to proliferate a trojan-type virus called FormBook. It is very similar to Swisscom Email Virus, Complaint Email Virus, AT&T Invoice Email Virus, and many others. As usual, criminals send hundreds of emails that contain deceptive messages encouraging users to open attachments, however, the attached Microsoft Office documents download and install malware - opening them results in infiltration of FormBook.


"BID PURCHASE DOCUMENT" campaign's emails contain a message encouraging victims to make a bid. For more information, users are encouraged to open an attached MS Office document. This is a scam. The opened document immediately installs FormBook onto the system. Note that the deceptive email contains the signature of an engineer from "Addax Engineering Co. Ltd", however, this is another deceptive ploy. Cyber criminals often claim to be employees of legitimate companies (typically major ones) or governmental agencies. In this way, they attempt to give the impression of legitimacy, thereby increasing the number of infections. Users are much more likely to open files that are received from familiar names. With regard to FormBook, this is a high-risk trojan designed to record sensitive information. The capabilities of this malware are significant - it can collect clipboard data, saved logins/passwords, take screenshots, track web browsing history, and so on. In addition, FormBook accepts commands from a remote Command and Control (C&C) server to perform various actions (e.g., reboot/shutdown the system, download files, etc.). Cyber criminals might gain access to victims' personal accounts (e.g., banks, social networks, etc.), and infect and exploit the system. Therefore, the presence of FormBook can lead to serious privacy issues, significant financial loss, and computer infections. You can read more about FormBook in this article. If you have recently opened the "BID PURCHASE DOCUMENT" campaign attachment, your computer is likely to be infected. We advise you to scan it with a reputable anti-virus/anti-spyware suite and eliminate all threats.

Threat Summary:
NameAddax Engineering bid purchase document 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.
▼ Download Combo Cleaner
To use full-featured product, you have to purchase a license for Combo Cleaner. 7 days free trial available.

There are many trojans similar to FormBook. The list of examples includes (but is not limited to) Hancitor, LokiBot, Adwind, and TrickBot. These trojans are also likely to be distributed using spam campaigns. As with FormBook, most trojans record sensitive information. In some cases, however, these viruses proliferate other malware (typically ransomware). In summary, trojans pose a direct threat to your privacy and computer safety - they should be eliminated immediately.

How did BID PURCHASE DOCUMENT infect my computer?

"BID PURCHASE DOCUMENT" emails come together with a malicious Microsoft Office document. Once opened, this attachment encourages users to enable macro commands and/or notifies that the file might be linked to others. By complying, users inadvertently grant these files permission to infiltrate FormBook into the system. Although distributing malware using MS Office documents is a simple and effective method, it has a major flaw. Malicious documents are only able to infect the system if the user opens them using tools from the Microsoft Office suite. For example, if .doc files are opened using applications other than MS Word, malware will not be infiltrated. In addition, FormBook targets only the Microsoft Windows Operating System and, therefore, users of other platforms are safe.

How to avoid installation of malware?

Poor knowledge and careless behavior are the main reasons for computer infections. Caution is the key to safety. Therefore, pay close attention when browsing the Internet. We strongly recommend that you think twice before opening email attachments. Files that seem irrelevant or have been received from suspicious/unrecognizable email addresses should never be opened. Furthermore, download your software from official sources only (using direct download links) and keep installed applications up-to-date. Using a reputable anti-virus/anti-spyware suite is also paramount, since these tools can eliminate malicious files before the infection starts. If you have already opened the "BID PURCHASE DOCUMENT" attachment, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate infiltrated malware.

Text presented in the "BID PURCHASE DOCUMENT" email message:

Subject: Bid Purchase Document and Bid Terms and Condition
Good Morning Please offer your best price and delivery for the attached RFQ. Also, attached is the datasheet for your consideration. Awaiting your offer.
Thanks and regards,
Procurement Engineer
Addax Engineering Co. Ltd

Malicious attachment distributed via "BID PURCHASE DOCUMENT" spam campaign:

Malicious attachment distributed through BID PURCHASE DOCUMENT spam campaign

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.

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 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 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 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.

Click to post a comment

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
Addax Engineering bid purchase document 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 Addax Engineering bid purchase document virus on your mobile device.
We Recommend:

Get rid of Windows malware infections today:

Download Combo Cleaner

Platform: Windows

Editors' Rating for Combo Cleaner:
Editors ratingOutstanding!

[Back to Top]

To use full-featured product, you have to purchase a license for Combo Cleaner. 7 days free trial available.