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Backdoor:Win32/PcClient.CQ

First posted on 25 July 2015.
Source: Microsoft

Aliases :

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

Explanation :

Threat behavior

Installation


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

In subkey: HKLM\System\CurrentControlSet\Services\Malware\Parameters Sets value: "ServiceDll"
With data: "c:\input\m?"

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

We have seen this threat connect to the following websites:

• 783244..org at TCP port 81
• snow37..net at TCP port 77

This malware description was published using automated analysis of file SHA1 2923fdaabeddd85d510d489ab362703428167d01.

Symptoms

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

• You see registry modifications such as:
  
  • In subkey: HKLM\System\CurrentControlSet\Services\Malware\Parameters
    Sets value: "ImagePath"
    With data: "%systemroot%\system32\svchost.exe -k malware"
    
    
  • In subkey: HKLM\System\CurrentControlSet\Services\Malware\Parameters
    Sets value: "ServiceDll"
    With data: "c:\input\m?"
    
    
  • In subkey: HKLM\System\CurrentControlSet\Services\Malware\Parameters
    Sets value: "ServiceMain"
    With data: "servicemain"
    
    

Last update 25 July 2015

 

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