Do not open file attached to DUNCAN ENGINEERING LIMITED ORDER malspam

Also Known As: Agent Tesla RAT
Type: Trojan
Distribution: Low
Damage level: Severe

DUNCAN ENGINEERING LIMITED ORDER email virus removal guide


Duncan Engineering Limited is a legitimate company, however, there are cyber criminals who use its name in their malspam campaign. As a rule, cyber criminals behind malspam attempt to trick recipients into opening a malicious attachment or a file that can be downloaded via the provided website link that is designed to install malicious software. In this particular case they send emails with an image (img.) file attached to them which is designed to install a Remote Administration Trojan (RAT) called Agent Tesla.

DUNCAN ENGINEERING LIMITED ORDER email virus malware-spreading email spam campaign

Cyber criminals behind this malspam campaign attempt to trick recipients into believing that they have received an email regarding a purchase order from the Duncan Engineering Limited company. Their main goal is to deceive recipients into opening/executing the attached "DUNCAN PO ORDER.img" file which is designed to install Agent Tesla. The main purpose of this malicious software is to steal sensitive information. It is designed to do that by logging keystrokes (recording keyboard input). As a rule, cyber criminals behind malware like Agent Tesla attempt to steal information such as login credentials (usernames and passwords) of email, social networking, online money transferring and other accounts, credit card details, and other details that could be misused to steal accounts, identities, make fraudulent purchases, transactions, and for other malicious purposes that would help cyber criminals to generate revenue in one or another way. Therefore, it is strongly recommended no to trust this email and leave the file that is attached to it unopened.

Threat Summary:
Name Agent Tesla RAT
Threat Type Trojan, password-stealing virus, banking malware, spyware.
Hoax Email contains a copy of a purchase order from Duncan Engineering Limited
Attachment(s) DUNCAN PO ORDER.img (its name may vary)
Detection Names (DUNCAN PO ORDER.img)
ESET-NOD32 (A Variant Of MSIL/GenKryptik.ESST), Kaspersky (HEUR:Trojan-PSW.MSIL.Agensla.gen), Microsoft (Trojan:Win32/Wacatac.C!ml), Symantec (Trojan.Gen.2), 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 Agent Tesla
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 Combo Cleaner.
▼ Download Combo Cleaner
To use full-featured product, you have to purchase a license for Combo Cleaner. 7 days free trial available.

Some examples of other malspam campaigns are "TNT EXPRESS Email Virus", "FedEx Invoice Ready Email Virus" and "PO Copy Email Virus". What most malspam campaigns have in common is that they are disguised as official emails from legitimate companies, organizations and they contain some link or malicious attachment. More examples of malware that cyber criminals distribute via malspam are Ursnif, Dridex, TrickBot.

How did "DUNCAN ENGINEERING LIMITED ORDER email virus" infect my computer?

This email has a malicious image with the name "DUNCAN PO ORDER.img" attached to it. It installs malware (Remote Administration Trojan named Agent Tesla) only when users/recipients download and open it. It is worthwhile to mention that cyber criminals use other file formats to distribute malware as well. It is common that they send malicious Microsoft Office, PDF documents, JavaScript files, archive files like ZIP, RAR, executable files (like .exe). In one way or another, computers get infected when users open files that are sent them via malspam. It is worthwhile to mention that when users open malicious documents with Microsoft Office version that was released before year 2010, they allow those documents to install malware automatically. Never versions include the "Protected View" mode which prevents malicious documents from installing malware. They do not install malware unless users enable editing/content (macros commands).

How to avoid installation of malware?

It is advised not to open attachments or web links in irrelevant emails that are received form unknown, suspicious addresses. Download software and files from official websites and through direct links and not to use other sources for that (e.g., Peer-to-Peer networks, unofficial pages, third party downloaders). The same applies to third party installers. Update and/or activate installed software with tools and/or by using functions that are provided by official developers. It is never safe to use various third party, unofficial tools neither to activate or update software. Besides, it is not legal to activate licensed software with such tools. Also, it is recommended to scan the operating system with a reputable antivirus or anti-spyware and do it regularly. Also, that software should never be out of date. If you've already opened the file attached to DUNCAN ENGINEERING LIMITED ORDER email, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate infiltrated malware.

Text presented in the DUNCAN ENGINEERING LIMITED ORDER malspam email:


Dear Sir/Madam,

Please find enclosed herewith a soft Copy of Purchase Order raised on you.

You are requested to provide us following ASAP -

1. Order acknowledgment & Delivery date confirmation.

2. Kindly arrange delivery of material 1 WEEK before purchase order due date.

3. You have to attached inspection report & relevant test certificate along with invoice copy.

Thanking you,


Jay Cho

Sales Department / Assistant Manager

Tel : +82 54 280 4562, Fax : +82 54 275 2736

Mobile : +82 10 7187 7641

Malicious attachment distributed via DUNCAN ENGINEERING LIMITED ORDER malspam campaign:

Malicious attachment distributed through DUNCAN ENGINEERING LIMITED ORDER email virus 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 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 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
Agent Tesla RAT 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 Agent Tesla RAT 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.