Home / malware

PDF

Backdoor:Win32/Xtrat.R

First posted on 26 April 2016.
Source: Microsoft

Aliases :

There are no other names known for Backdoor:Win32/Xtrat.R.

Explanation :

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

• %APPDATA%\microsoft\windows\6afjh4rf.dat
• %SystemRoot%\firefox\mozill.exe
• %TEMP%\imarch05.exe
• \imarch.lnk
• c:\~tmp5345\445dff.dll

It modifies the registry so that it runs each time you start your PC. For example:

In subkey: HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Sets value: "HKCU"
With data: "%SystemRoot%\firefox\mozill.exe"
In subkey: HKLM\Software\Microsoft\Active Setup\Installed Components\{2A2LX8Y0-H502-6B4I-W35O-Y2E6HGY83NE8}
Sets value: "StubPath"
With data: "%SystemRoot%\firefox\mozill.exe restart"
In subkey: HKLM\Software\Microsoft\Windows\CurrentVersion\Run
Sets value: "HKLM"
With data: "%SystemRoot%\firefox\mozill.exe"

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

Payload

Allows backdoor access and control

This threat can give a malicious hacker access and control of your PC. They can then perform a number of different actions, such as:

• Deleting files
• Downloading and running files
• Logging your keystrokes or stealing your sensitive data
• Modifying your system settings
• Running or stopping applications
• Spreading malware to other PCs
• Uploading files

Connects to a remote host

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

• cachacok13.no-ip.org using port 2402

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

Additional information

Creates a mutex

This threat can create one or more mutexes on your PC. For example:

• {C20CD437-BA6D-4ebb-B190-70B43DE3B0F3}
• 6AFjH4Rf
• 6AFjH4RfPERSIST
• XTREMEUPDATE

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 b0cc1980f4383b66d1d8618ed6667f13f535ddfa.

Last update 26 April 2016

 

TOP