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TrojanDropper:Win32/Strakupa.A

First posted on 17 August 2015.
Source: Microsoft

Aliases :

There are no other names known for TrojanDropper:Win32/Strakupa.A.

Explanation :

Threat behavior

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

• \loader.exe
• \xunlei.dll

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

In subkey: HKLM\Software\Classes\CLSID\{7C16439F-6158-474E-96B8-8F4B86C07C5A}\InprocServer32

Sets value: "(default)"
With data: "\xunlei.dll"

Sets value: "ThreadingModel"
With data: "apartment"

In subkey: HKLM\Software\Classes\TypeLib\{26C053AE-682F-4CF1-B010-8DF7CF315BFA}\1.0\0\win32

Sets value: "(default)"
With data: "\xunlei.dll"

In subkey: HKLM\Software\Classes\XunLei.XunLeiBHO.1\CLSID

Sets value: "(default)"
With data: "{7c16439f-6158-474e-96b8-8f4b86c07c5a}"

In subkey: HKLM\Software\Classes\XunLei.XunLeiBHO\CLSID

Sets value: "(default)"
With data: "{7c16439f-6158-474e-96b8-8f4b86c07c5a}"



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.

Changes web browser settings


It can change your Internet Explorer start page by modifying the following registry entry:

In subkey: HKCU\Software\Microsoft\Internet Explorer\Main

Sets value: "Start Page"
With data: "http://www.ku265.com"

Sets value: "Start Page"
With data: "http://www.ku265.com"



This malware description was published using automated analysis of file SHA1 34642518eacddc844794117c797486be716b4578.

Symptoms

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

• You see a file similar to:
  • \loader.exe
  • \xunlei.dll

• You see registry modifications such as:
  
  • In subkey: HKCU\Software\Microsoft\Internet Explorer\Main
    Sets value: "Start Page"
    With data: "http://www.ku265.com"
    
    
  • In subkey: HKCU\Software\Microsoft\Internet Explorer\Main
    Sets value: "Start Page"
    With data: "http://www.ku265.com"
    
    
  • In subkey: HKLM\Software\Classes\CLSID\{7C16439F-6158-474E-96B8-8F4B86C07C5A}\InprocServer32
    Sets value: "(default)"
    With data: "\xunlei.dll"
    
    
  • In subkey: HKLM\Software\Classes\CLSID\{7C16439F-6158-474E-96B8-8F4B86C07C5A}\InprocServer32
    Sets value: "ThreadingModel"
    With data: "apartment"
    
    
  • In subkey: HKLM\Software\Classes\TypeLib\{26C053AE-682F-4CF1-B010-8DF7CF315BFA}\1.0\0\win32
    Sets value: "(default)"
    With data: "\xunlei.dll"
    
    
  • In subkey: HKLM\Software\Classes\XunLei.XunLeiBHO.1\CLSID
    Sets value: "(default)"
    With data: "{7c16439f-6158-474e-96b8-8f4b86c07c5a}"
    
    
  • In subkey: HKLM\Software\Classes\XunLei.XunLeiBHO\CLSID
    Sets value: "(default)"
    With data: "{7c16439f-6158-474e-96b8-8f4b86c07c5a}"
    
    

Last update 17 August 2015

 

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