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TrojanSpy:Win32/Bancos.ALJ

First posted on 15 July 2014.
Source: Microsoft

Aliases :

There are no other names known for TrojanSpy:Win32/Bancos.ALJ.

Explanation :

Threat behavior

Installation

TrojanSpy:Win32/Bancos.ALJ creates the following files on your PC:

• %windir%\windowsupdate.log
• c:\documents and settings\administrator\local settings\temp\d410.dat
• c:\documents and settings\administrator\local settings\temp\yjvcno.exe

Payload

Changes system security settings

TrojanSpy:Win32/Bancos.ALJ disables the Least Privileged User Account (LUA), also known as the ?administrator in Admin Approval Mode? user type. It does this by making the following registry modifications:

Sets value: "EnableLUA"
With data: "0"
In subkey: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System

Note: Disabling the LUA allows all applications to run by default with all administrative privileges. You won't be asked for explicit consent. Contacts remote host

The malware might contact a remote host at 103.31.186.30 using port 80. Commonly, malware does this to:

• Report a new infection to its author
• Receive configuration or other data
• Download and run files, including updates or other malware
• Receive instructions from a remote hacker
• Upload data taken from your PC

This malware description was produced and published using automated analysis of file SHA1 2cfc49074f4d524868e4ec07a41ad7aca1ca9c6e.Symptoms

System changes

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

• You have these files:
  
  %windir%\windowsupdate.log
  c:\documents and settings\administrator\local settings\temp\d410.dat
  c:\documents and settings\administrator\local settings\temp\yjvcno.exe

• You see these entries or keys in your registry:
  
  Sets value: "EnableLUA"
  With data: "0"
  In subkey: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System

Last update 15 July 2014

 

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