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Assasin Trojan. How to remove? (Uninstall guide)

removal by Julie Splinters - - | Type: Trojans

Assasin Trojan is dangerous malware that steals your personal data

Assasin Trojan
Assasin Trojan is a dangerous type of malware that can steal sensitive information

Assasin Trojan is a malicious application that aims to take over targeted victim's device. Trojan horses[1] are especially dangerous because they are typically difficult to detect and eliminate. Once installed, malware seeks to gain administrator-level access rights to perform its malignant tasks. One of the most distinctive traits of this cyber threat is that it attempts to deny access to security software websites and disables firewall and anti-virus programs automatically.

SUMMARY
Name Assasin Trojan
Type Trojan horse
First detected 2002
Main dangers Sensitive information loss, damaged software, etc.
Distribution Spam emails, malicious websites, file-sharing sites, etc.
Symptoms No symptoms in some cases; otherwise, an increased amount of errors, slow operation of the machine, increased amount of ads, high CPU usage, etc.
Detection Use Reimage or Plumbytes Anti-MalwareNorton Internet Security

The malicious application was first discovered in 2002, and the last known update to it was made in 2007. Although malware is relatively old, it does not mean that it is inactive. Therefore, do not get surprised if your anti-virus software detects Assasin virus. That being said, malware has multiple names, depending on the software that identifies it:

  • Backdoor.Assasin.10
  • Troj/Assasin-F
  • PAK:PE_Patch.Morphine
  • Malware.h !!
  • BKDR_SANISI.A
  • TR/Crypt.Morphine.Gen
  • PAK:PE_Patch.Morphine
  • Win32:Assasin-L
  • W32/Backdoor.NZA

Regardless of which name is used – you must take care of Assasin Trojan removal as soon as possible. We do not recommend manual elimination as the process can damage critical system files and damage your machine even further. Instead, we advise using Reimage or Plumbytes Anti-MalwareNorton Internet Security – these anti-malware programs can detect malicious files and remove all the components.

Trojan horses are one of the most dangerous types of malware. It disguises itself as a legitimate document (such as .doc, .pdf, .xlsx, etc.) and then executes its code into the PC immediately after execution of the malicious file. It modifies Windows registry to increase persistence, as well as terminates various processes which could help with virus detection. As soon as execution is complete, the virus deletes its source program.

In most cases, users can barely notice that their machine is infected, mainly because Trojan horses rarely show any signs or symptoms. Sometimes, however, users might see an increased amount of software or system crashes, stop errors,[2] an increased amount of adverts and similar. Nevertheless, Assasin trojan is designed in a way so that user would not notice its presence on the device.

Assasin trojan's goal is to disrupt the normal functioning of the system and inflict damage to it. Hackers can gain remote access to the computer, take screenshots, monitor victim's activity, delete programs, stop various processes and steal valuable personal information. 

 Because of these reasons, it is vital to detect and remove Assasin Trojan before it can cause maximum damage. Even though it may be difficult to detect, we recommend users perform system scans on a regular basis.

Assasin virus
Assasin virus is a trojan that enters the machine unnoticed and disables anti-virus protection

Trojans inject devices using deceptive techniques

Malware authors always thrived to inject their creations into as many computers as possible to gain the most profit, be it bank account information or other personal information stealing. While it was much easier to spread viruses back in the 2000s (the internet was much less regulated back then), hackers kept coming back with new malware infiltration tricks.

The phishing email tactic is by far the most successful one, and many hackers use botnets to spread malicious files. Therefore, you should be extremely careful when it comes to opening emails from unknown sources, especially when it has a file attached to it. Another red flag: the document will demand macro function to be enabled – do not agree!

Additionally, security experts[3] advise users to avoid browsing file-sharing websites, use cracks or keygens, patch software whenever updates are available, retain strong passwords for each of the accounts and employ reputable security software.

Remove Assasin Trojan from your computer and prevent further damage

Assasin Trojan removal may be quite tricky, as malware attempts to disable security software. However, there is a quite simple way to bypass that – you have to reboot your machine in Safe Mode with Networking and load anti-virus software from there. 

As soon as you enter Safe Mode, launch Reimage or Plumbytes Anti-MalwareNorton Internet Security security software and thoroughly scan your machine. Malware should be deleted in just a few minutes. After the infection is cleared, make sure change all the passwords for every account and keep the anti-malware software on with real-time protection feature on at all times.

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What to do if failed?
If you failed to remove virus damage using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to remove virus damage. Free scanner allows you to check whether your PC is infected or not. If you need to remove malware, you have to purchase the licensed version of Reimage malware removal tool.
More information about this program can be found in Reimage review.

If you decided to select another anti-spyware, uninstall Reimage from your computer.
Press mentions on Reimage
Alternate Software
Malwarebytes
Alternate Software
Malwarebytes

To remove Assasin Trojan, follow these steps:

Remove Assasin Trojan using Safe Mode with Networking

To start security software properly, enter Safe Mode with Networking the following way:

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove Assasin Trojan

    Log in to your infected account and start the browser. Download Reimage or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete Assasin Trojan removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Remove Assasin Trojan using System Restore

You can also attempt to eliminate Assasin Trojan using System Restore function:

  • Step 1: Reboot your computer to Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of Assasin Trojan. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with Reimage and make sure that Assasin Trojan removal is performed successfully.

About the author

Julie Splinters
Julie Splinters - Malware removal specialist

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References