Home / malware

PDF

SoftwareBundler:Win32/Xiazai

First posted on 13 November 2015.
Source: Microsoft

Aliases :

There are no other names known for SoftwareBundler:Win32/Xiazai.

Explanation :

Threat behavior

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

• %APPDATA%\desklnk\controller32.exe
• %APPDATA%\desklnk\dateanimationicon32.dll
• %APPDATA%\desklnk\rililnkex32.dll

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

In subkey: HKLM\Software\Classes\CLSID\{350F098C-C09F-40F5-8761-3959CA346EDA}\InprocServer32

Sets value: "(default)"
With data: "%APPDATA%\desklnk\rililnkex32.dll"

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

In subkey: HKLM\Software\Classes\RiliLnkEx.RiLiLnkExt.1\CLSID

Sets value: "(default)"
With data: "{350f098c-c09f-40f5-8761-3959ca346eda}"

In subkey: HKLM\Software\Classes\RiliLnkEx.RiLiLnkExt\CLSID

Sets value: "(default)"
With data: "{350f098c-c09f-40f5-8761-3959ca346eda}"

In subkey: HKLM\Software\Classes\TypeLib\{D2B48D19-078D-451B-9EBC-788B43AF427B}\1.0\0\win32

Sets value: "(default)"
With data: "%APPDATA%\desklnk\rililnkex32.dll"



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



Behavior


Changes your Internet Explorer home page

This threat changes the registry on your PC to set your default home page in Internet Explorer.

Connects to a remote host

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

• xiazai.rilibiao.com.cn using port 80
• xiazai.xiazai2.net using port 80
• down.xiazai2.net 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

We have seen this threat access online content, including:

• LinkConfig1.xml
• LinkConfig.xml

Additional information

Creates a mutex

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

• {C20CD437-BA6D-4ebb-B190-70B43DE3B0F3}
• RiliIconMutex

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 8165534370acd8c39f0a17df650d6aa695229fb1.

Symptoms

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

• Your homepage is changed
  
• You see a file similar to:
  • %APPDATA%\desklnk\controller32.exe
  • %APPDATA%\desklnk\dateanimationicon32.dll
  • %APPDATA%\desklnk\rililnkex32.dll

• You see registry modifications such as:
  
  • In subkey: HKLM\Software\Classes\CLSID\{350F098C-C09F-40F5-8761-3959CA346EDA}\InprocServer32
    Sets value: "(default)"
    With data: "%APPDATA%\desklnk\rililnkex32.dll"
    
    
  • In subkey: HKLM\Software\Classes\CLSID\{350F098C-C09F-40F5-8761-3959CA346EDA}\InprocServer32
    Sets value: "ThreadingModel"
    With data: "apartment"
    
    
  • In subkey: HKLM\Software\Classes\RiliLnkEx.RiLiLnkExt.1\CLSID
    Sets value: "(default)"
    With data: "{350f098c-c09f-40f5-8761-3959ca346eda}"
    
    
  • In subkey: HKLM\Software\Classes\RiliLnkEx.RiLiLnkExt\CLSID
    Sets value: "(default)"
    With data: "{350f098c-c09f-40f5-8761-3959ca346eda}"
    
    
  • In subkey: HKLM\Software\Classes\TypeLib\{D2B48D19-078D-451B-9EBC-788B43AF427B}\1.0\0\win32
    Sets value: "(default)"
    With data: "%APPDATA%\desklnk\rililnkex32.dll"
    
    

• You see the following mutex:
  • {C20CD437-BA6D-4ebb-B190-70B43DE3B0F3}
  • RiliIconMutex

Last update 13 November 2015

 

TOP