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TrojanDropper:Win32/Banload.BAX

First posted on 04 August 2015.
Source: Microsoft

Aliases :

There are no other names known for TrojanDropper:Win32/Banload.BAX.

Explanation :

Threat behavior

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

• %APPDATA%\microsoft\windows\start menu\programs\startupx\system.pif
• %APPDATA%\vayc\ogxe.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: "{661708CC-D58E-1302-5FA6-6BECC6B43847}"
With data: "%APPDATA%\vayc\ogxe.exe"


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.



Connects to a remote host

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

• rejem.com.br 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 one or more mutexes on your PC. For example:

• qazwsxedc

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 15ab188de1aa80b636cd4b74ff8e619fc50783ce.

Symptoms

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

• You see a file similar to:
  • %APPDATA%\microsoft\windows\start menu\programs\startupx\system.pif
  • %APPDATA%\vayc\ogxe.exe

• You see registry modifications such as:
  
  • In subkey: HKCU\Software\Microsoft\Windows\Currentversion\Run
    Sets value: "{661708CC-D58E-1302-5FA6-6BECC6B43847}"
    With data: "%APPDATA%\vayc\ogxe.exe"
    
    

• You see the following mutex:
  • {09A51140-CC02-7CB0-5FA6-6BECC6B43847}
  • {3DE038BB-E5F9-48F5-80EF-61F419FD325F}
  • {3DE038BB-E5F9-48F5-8CEA-61F415F8325F}
  • {3DE038BB-E5F9-48F5-A4EA-61F43DF8325F}
  • {3DE038BB-E5F9-48F5-B0EA-61F429F8325F}
  • {3DE038BB-E5F9-48F5-B4E8-61F42DFA325F}
  • {3DE038BB-E5F9-48F5-C8E9-61F451FB325F}
  • {3DE038BB-E5F9-48F5-D0E8-61F449FA325F}
  • {3DE038BB-E5F9-48F5-D4E4-61F44DF6325F}
  • qazwsxedc

Last update 04 August 2015

 

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