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Backdoor:Win32/Bafruz!rfn

First posted on 13 September 2016.
Source: Microsoft

Aliases :

There are no other names known for Backdoor:Win32/Bafruz!rfn.

Explanation :

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

• %SystemRoot%\update.5.0\svchost.exe

It can make various registry changes during its installation, including:

In subkey: HKLM\SOFTWARE\btcclient

Sets value: "close"
With data: "0"

Sets value: "close"
With data: "1"

Sets value: "mainer_cmd"
With data: ""

Sets value: "ver"
With data: "1.63"

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:

• free-dns-server1.com using port 53
• youtube.com 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

It can stop some processes from running on your PC, including:

• phoenix.exe
• rpcminer-cpu.exe
• ufa.exe

Additional information

Creates a mutex

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

• btcclient

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 bbf64d2066e3e9e2e9af61923bc2a32a26b93128.

Last update 13 September 2016

 

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