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Backdoor:Win32/Noancooe

First posted on 15 October 2015.
Source: Microsoft

Aliases :

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

Explanation :

Threat behavior

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

• %APPDATA%\c97e261a-abeb-4aa5-9797-7611f82457ca\run.dat
• %TEMP%\windowsus\windows.exe

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: "Windows.exe"
With data: "c:\users\admini~1\appdata\local\temp\windowsus\windows.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:

• a.config.skype.com using port 53
• dawood01.ddns.net using port 9500
• dns.msftncsi.com using port 53

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 a mutex on your PC. For example:

• {d84f6a6b-ea26-49f1-a11d-082520f7fa1c}

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 2adc13a2ecf5d9268c9d67b702c253dd1e176835.

Symptoms

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

• You see a file similar to:
  • %APPDATA%\c97e261a-abeb-4aa5-9797-7611f82457ca\run.dat
  • %TEMP%\windowsus\windows.exe

• You see registry modifications such as:
  
  • In subkey: HKCU\Software\Microsoft\Windows\CurrentVersion\Run
    Sets value: "Windows.exe"
    With data: "c:\users\admini~1\appdata\local\temp\windowsus\windows.exe"

• You see the following mutex:
  • {d84f6a6b-ea26-49f1-a11d-082520f7fa1c}

Last update 15 October 2015

 

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