Trojan:Win32/Emotet.A

What is Trojan:Win32/Emotet.A?

Trojan:Win32/Emotet.A is a threat identified by Microsoft Security Software. This is a typical malware that targets the core system of Windows in order to complete its tasks. Trojan:Win32/Emotet.A was made to execute a series of commands once it gets inside the system. It will gather data like system settings, Windows version, network configuration, and so on. Collected data will be sent to remote attacker for analysis.

Threat behavior

Installation

In general, system will get infected with Trojan:Win32/Emotet.A if malicious code is executed on the computer. Source of this trojan may vary due to the changing ways how it is deployed. Typically, spam email messages disguising as open letter from reputable institution are used to deceive recipients. Body of the message contains enticing phrases that tries to convince user into opening the attached file.

Malicious links from social media sites and instant messaging program are also seen as method used in distributing Trojan:Win32/Emotet.A. Illegally distributed software and media materials may also contain code that can lead to the infection of this malware.

Payload

In order to run itself on Windows start-up, Trojan:Win32/Emotet.A will make a copy of itself under system files. Then, registry entry is created to call the file on each Windows boot-up. Apart from that, this malware will also drop non-malicious files on various folders of the compromised PC.

Trojan:Win32/Emotet.A occasionally connects to a remote host to execute tasks like the following:

  • Notify attacker on the new infection
  • Sends gathered data from the infected computer
  • Download and execute additional files including an updated version of the Trojan
  • Accept command from a remote attacker

Symptoms

There is not much obvious symptom from this malware. Trojan:Win32/Emotet.A operates silently in the background. However, Microsoft Security Software may alert you on the presence of this Trojan.

Presence of these files confirms presence of Trojan:Win32/Emotet.A:

  • c:\documents and settings\administrator\application data\7989841.bat
  • c:\documents and settings\administrator\application data\microsoft\pkdsetup.exe

Some examples of hazardous ransomware that were identified with this signature includes Sglh, Lyli, and SYTCO.

List of Variants

List of Trojan:Win32/Emotet Variants
Version NameAlert LevelDate Added
Trojan:Win32/Emotet.AY!dhaSevereNov 20, 2018
Trojan:Win32/Emotet.ANSevereJul 30, 2018
Trojan:Win32/Emotet.AV!dhaSevereNov 20, 2018
Trojan:Win32/Emotet.A!lnkSevereDec 29, 2018
Trojan:Win32/Emotet.AU!bitSevereJan 09, 2019
Trojan:Win32/Emotet.AP!MSRSevereNov 20, 2019
Trojan:Win32/Emotet.AX!MTBSevereNov 25, 2019
Trojan:Win32/Emotet.ARC!MSRSevereNov 26, 2019
Trojan:Win32/Emotet.AB!MTBSevereDec 13, 2019
Trojan:Win32/Emotet.AA!rfnSevereDec 14, 2019
Trojan:Win32/Emotet!emlSevereDec 23, 2020
Trojan:Win32/Emotet.AER!emlSevereJan 23, 2020
Trojan:Win32/Emotet.AER!MTBSevereJun 17, 2020
For complete details including full list of Trojan:Win32/Emotet.A variants, please refer to this Microsoft Security Intelligence page

How to remove Trojan:Win32/Emotet.A?

To totally remove Trojan:Win32/Emotet.A from the computer and get rid of relevant virus and trojan, please execute the procedures as stated on this page. Make sure that you have completely scan the system with suggested malware removal tools and virus scanners.

Remove Trojan:Win32/Emotet.A Instantly

To instantly remove Trojan:Win32/Emotet.A, we suggest that you scan the infected computer with this powerful virus removal tool. It can detect and get rid of Trojans, viruses, malware, and adware from the infected computer. To fully protect the computer against Trojan:Win32/Emotet.A or similar attack, you can activate Sophos to have real-time scanning and complete defense against all forms of threats.

1. Download Sophos Virus Removal Tool from the link below. Save the file on your computer where you can easily access it.

2. Once the download completes, browse the location of the file. Double-click to run the program and begin the install process.

Screnshot of Sophos Installer

3. On first windows of installation wizard, click Next to continue. Then, it will display the program’s License Agreement. You need to Accept the terms in order to proceed. If Windows prompts for User Account Control, please click Yes to proceed.

Screenshot of Sophos EULA Page

4. On succeeding windows, click Next or Continue to carry on with the installation. After completing the installation process, Launch Sophos Virus Removal Tool.

5. Internet connection is required when running this scanner in order to download important updates. Make sure that everything is up-to-date to effectively remove virus like Trojan:Win32/Emotet.A.

6. Click the  button to  carry out the Scan. This will check the system for presence of malicious objects, malware, and viruses. The tool reveals items that were found linked to Trojan:Win32/Emotet.A and other suspicious entities. Be sure to remove all identified threats.

Screenshot of Sophos Virus Scan

After executing the above instructions, Trojan:Win32/Emotet.A should have been eliminated totally from the computer. If there are still signs of infection or computer is displaying unusual behaviors, please continue with the remaining procedures.

Stage 1 : Start Windows in Safe Mode With Networking

Windows 10 Guide

1. Click on Windows logo and select Power icon when options pop-ups.
2. Select Restart from the options while pressing Shift key on the keyboard.
3. Choose an Option window will appear, select the Troubleshoot button.
4. On next window, please choose Advanced Option.
5. On Advanced Option window, click on Startup Settings and then, click Restart button to reboot the computer.
6. When Windows boot on Startup Settings, press function key F5 or number 5 on keyboard.

A simpler alternative for Windows 10 users is to scan the computer with Microsoft Defender Offline. This will run a virus scan in the recovery environment.

Windows 8 Guide

1. Click Windows Start icon at the lower left section of the screen.
2. Open Search window and type Advanced in the field. It will open General PC Settings.
3. Click on Advanced Startup and then, click on Restart Now button.
4. Once the computer starts in Advanced Startup option menu, select Troubleshoot.
5. Next, click on Advanced Options to reveal the next section.
6. Click Startup settings and then, click Restart button to boot the PC in Startup Settings.
7. Use function key F5 or number key 5 to Enable Safe Mode with Networking.

Stage 2 :Double Check with Microsoft Security Apps

Microsoft Windows has built-in security application that you can use to double-check if computer is still infected with Trojan:Win32/Emotet.A. For Windows 8 and 10 users, please run Windows Defender. Users of Windows Vista and older versions can utilize Microsoft Security Essentials to remove Trojan:Win32/Emotet.A virus.

Windows 8 / 10 Instructions:

Windows Defender is a free tool that was built help you remove Trojan:Win32/Emotet.A, viruses, and other malicious items from Windows 8 or Windows 10 system. Follow these procedures to scan your computer with Windows Defender:

1. Tap or click the Search charm, search for defender, and then open Windows Defender.

If Windows Defender is not yet installed on the computer, please proceed to download page using the link below. It also contains detailed instruction to install and use the program effectively. Proper usage is required to totally remove Trojan:Win32/Emotet.A

WD-charm

2. On the Home tab, click Full under Scan Options. Click Scan now to start scanning for presence of Trojan:Win32/Emotet.A. The process may take a while to complete.

WD-fullscan

3. After the scan, delete/quarantine identified threats wether it is relevant to Trojan:Win32/Emotet.A or not. You may now restart Windows to complete the virus removal process.

Windows XP, Windows Vista, and Windows 7 Instructions:

1. Open Microsoft Security Essentials by going to Windows Start > All Programs. If the tool is not yet installed on the computer, please download Microsoft Security Essentials from the link below. Save the file on your hard drive.

Complete installation guide and usage are also provided on the same link. It is essential in removing Trojan:Win32/Emotet.A effectively. If Microsoft Security Essentials is already installed on the PC, please proceed with the steps below.

2. On Microsoft Security Essentials Home screen, please choose Full under Scan Options.

MSE Full Scan

3. Click on Scan Now button to start detecting Trojan:Win32/Emotet.A items, viruses, and malware on the PC. Scan may take a while, please be patient and wait for the process to end.

How to protect the computer?

The initial defense that comes to the mind of any computer users is to install an anti-virus or anti-malware program. This move is sensible and probably the most practical way to protect the computer against Trojan:Win32/Emotet.A attack. Hence, keep in mind that having a security software do not give full guarantee of protection. The most part of the prevention still lies on being cautious of users and therefore we are providing the following information as guidelines to protect the computer from virus infection.

Avoid Malicious Websites

There are enormous numbers of websites that was made for the primary purpose of spreading Trojan:Win32/Emotet.A. Normally, these sites are involved in integrating malicious pop-up and browser hijacker, that will eventually cause further virus infection. Avoid such kind of websites.

Delete Phishing Emails

The mass-mailing of computer viruses gives the attackers the luxury of spreading their malicious code in just one send off. This will arrive in the inbox as email that appears to be from a legitimate organization. So, if you receive an unexpected email with a link or an attached file, better delete it immediately.

Do Not Click a Suspicious Link

Links from social media, forums, and blog sites are sometimes being utilized by attackers to drive web users to a malicious page that contains malicious code. Therefore, do not just click on any link especially if it looks suspicious. Accidental access to the destination site may lead to Trojan:Win32/Emotet.A infection.

Be Careful When Downloading Files

Cracked software, serial key generators, and several freeware are seen as another method that spreads the Trojan:Win32/Emotet.A virus. Avoid acquiring these types of application and if there is a need to download a freeware or shareware, be sure to obtain it from the official website or trusted providers.

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