Prevent installation of Agent Tesla via Teco New Order malspam email

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

Teco New Order email virus removal guide

What is Teco New Order email virus?

In most cases cyber criminals behind malspam emails like this one attempt to trick recipients into clicking a download link for a malicious file and opening that file, or executing the file that is attached to an email. In one way or another, the main purpose of such emails is to deceive recipients into infecting their computers with a certain malicious software. This particular malspam email is used to distribute a Remote Access Trojan called Agent Tesla.

Teco New Order email virus malware-spreading email spam campaign

Cyber criminals behind this malspam email attempt to trick recipients into believing that they have received an email from the company called Teco and it has a document regarding some order attached to it. Although, this email has a malicious IMG ("Teco New Order.img") file attached to it which, if executed, installs Agent Tesla. As mentioned in the introduction, Agent Tesla is the name of a RAT. This RAT is designed to log keystrokes (record keyboard input), steal credentials saved on a number of web browsers, email and messaging clients, FTP, VPN clients, some download managers. Also, it is designed to block access to Task Manager, Registry, prevent victims from executing commands via the Command Prompt and using some of the other Windows operating system features. Typically, cyber criminals use malware with such capabilities to collect sensitive, personal information like login credentials (usernames, email addresses, passwords), credit card details and other personal data that could be misused to steal identities, make fraudulent purchases, transactions, spread malware via email and/or other hijacked/stolen accounts, deceive other users into transferring money, and/or for other malicious purposes. Therefore, users who would have their computers infected with Agent Tesla could become victims of identity theft, suffer monetary loss, experience problems related to online privacy, browsing safety, and/or encounter other serious issues.

Threat Summary:
Name Agent Tesla malware
Threat Type Trojan, password-stealing virus, banking malware, spyware.
Hoax Letter from Teco regarding an order
Attachment(s) Teco New Order.img (its name may vary)
Detection Names Avast (Win32:MalwareX-gen [Trj]), BitDefender (Trojan.GenericKD.35056115), ESET-NOD32 (A Variant Of MSIL/Kryptik.YLZ), Kaspersky (HEUR:Trojan-PSW.MSIL.Agensla.gen), 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 Malwarebytes.
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To summarize, cyber criminals behind malspam campaigns attempt to trick users into executing files that are designed to install malware by disguising their emails as official letters sent from legitimate companies. A couple of examples of other malspam campaigns like this one are "Tasco Email Virus", "Transcrop Bank Email Virus" and "Print Works Email Virus".

How did Teco New Order email virus infect my computer?

The IMG file ("Teco New Order.img) attached to this email installs the Agent Tesla RAT only if recipients download and open/execute it. The same applies to most of the other files that are used in malspam campaigns (e.g. malicious Microsoft Office, PDF documents, executable files like .exe, archive files like ZIP, RAR, JavaScript files). It is worthwhile to mention that malicious MS Office documents can install malware on computers only if users enable content/editing (macros commands) in them. Although, if users open such document the MS Office version that was released before year 2010, then it infects a computer automatically. It is because the aforementioned versions do not include the "Protected View" mode which is designed to prevent malicious documents from installing malicious software.

How to avoid installation of malware?

Files and website links in received emails that are irrelevant and sent from unknown, suspicious addresses should not be opened. It i common that when recipients open files that were downloaded via such emails, they install some malicious software on their computers. Files and programs should be downloaded only from official websites and via direct download links. All the other sources (and similar) channels that are mentioned in the paragraph above can be used to distribute unwanted, malicious programs. Installed programs (and operating system) have to be updated with tools and/or implemented functions that are provided by their official developers. Various third party activation or updating tools should never be used. Also, it is not legal to activate licensed programs with unofficial tools, or use installers for pirated software. And lastly, operating system should be scanned for malware or other threats regularly and it should be done by using an up-to-date, and reputable antivirus or anti-spyware suite. If you've already opened "Teco New Order email virus" attachment, we recommend running a scan with Malwarebytes for Windows to automatically eliminate infiltrated malware.

Text presented in the "Teco New Order email virus" email letter:

Subject: Teco New Order

Hi ,
 
Please find new order per the attached from TECO

Please let us have the PI ASAP ! and confirm the earliest delivery time.

Best regards,
John

Joan Lluch
Sales Agent    m.+34 61 962 83 98   BGlobal > Tramuntana 13 > 08950 > Esplugues de Ll. (Barcelona) SPAIN

File attached to Teco New Order malspam campaign identified as threat by multiple detection engines:

teco new order email virus virustotal detections

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:
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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.

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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.

QR Code
Agent Tesla 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 Agent Tesla malware on your mobile device.
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