Trojan-PSW.Win32.Nilage.aut, Trj/Lineage.BLQ, TSPY_NILAGE.AUT


Nilage.AUT, a variant of Nilage, is a Trojan. Nilage.AUT drops and loads a password stealing component on an infected system and steals sensitive information from an infected computer. Nilage.AUT attempts to download and install other malware to the system.


Automatic action

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Technical Details

Once Nilage.AUT has been executed it will drop the following file:

  • %windir%\winpsfisle.dll

It will register its DLL component as a Browser Helper Object (BHO) so that every time Internet Explorer is loaded, Nilage.AUT is also loaded:

  • HKLM\SOFTWARE\Classes\CLSID\{267709FD-A691-43B0-BF38-0DF6887A9B44}\InProcServer32@ = "%windir%\winpsfisle.dll"

Everytime the DLL component is executed, it will drop and execute its .EXE component in the following path and filename:

  • %sysdir%\ExesFisle.exe


The main payload of Nilage.AUT is to steal information regarding Online games such as Lineage and Maple Story. Both are popular in Korea.

Nilage.AUT includes keylogging functionality.

Nilage.AUT steals information with regards to the following details:

Class Names

  • Internet Explorer_Server
  • Lineage
  • Lineage Windows Client
  • MapleStory
  • MapleStoryClass

Running Process Names

  • Angel.dat
  • Game.exe
  • Lineage
  • Lineage.exe
  • MapleStory.exe
  • NineDragons.EXE

Visited URL:


The gathered information including username and passwords are stored in this hard coded path and filename:

  • c:\6in1game.txt

Gathered information is sent to the hacker by posting the file to the following links:


It also gathers data from these links for it malicious acts:


Asside from being a password stealer, Nilage.AUT is also a downloader. It downloads and executes other malware from the following link:


And saves the download to the following path name filename:

  • %windir%\java\classes\spoolsys.exe

To ensure that an error will not occur, it will delete the existing file before downloading the new file.

Note: As of this writing the link above is no longer available.

Nilage.AUT does not fully support all operating system:

  • Windows 2000 - Fully executes
  • Windows 9x - Executes, but with some errors
  • Windows XP - Does not execute properly

Nilage.AUT is coded using Borland Delphi.

Date Created: -

Date Last Modified: -