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TrojanDropper:MSIL/Fatext.A

First posted on 13 November 2015.
Source: Microsoft

Aliases :

There are no other names known for TrojanDropper:MSIL/Fatext.A.

Explanation :

Threat behavior

Installation
This threat can create files on your PC, including:

• %LOCALAPPDATA%\tempaxlio.exe
• %LOCALAPPDATA%\tempiclick.exe

The malware uses code injection to make it harder to detect and remove. It can inject code into running processes.



Payload


Installs malware or unwanted software

This trojan can install other malware or unwanted software onto your PC.



Connects to a remote host

We have seen this threat connect to a remote host, including:

• khiemvv.tk using port 80

Malware can connect to a remote host to do any of the following:

• Check for an Internet connection
• Download and run files (including updates or other malware)
• Report a new infection to its author
• Receive configuration or other data
• Receive instructions from a malicious hacker
• Search for your PC location
• Upload information taken from your PC
• Validate a digital certificate

We have seen this threat access online content, including:

• vir%20m%E1%BB%9Bi.txt

Additional information

Creates a mutex

This threat can create a mutex on your PC. For example:

• 043ecba8-55bc-11e5-8175-00155d001000

It might use this mutex as an infection marker to prevent more than one copy of the threat running on your PC.



This malware description was published using automated analysis of file SHA1 a42e80a691a7139cd957d12ac9bb3f3bd56eab81.

Symptoms

The following can indicate that you have this threat on your PC:

• You see a file similar to:
  • %LOCALAPPDATA%\tempaxlio.exe
  • %LOCALAPPDATA%\tempiclick.exe

• You see the following mutex:
  • 043ecba8-55bc-11e5-8175-00155d001000

Last update 13 November 2015

 

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