Trojan-PSW:W32/Nilage.AFZ

Classification

Category :

Malware

Type :

Trojan-PSW

Aliases :

Trojan-PSW.Win32.Nilage.afz

Summary

Trojan-PSW:W32/Nilage.AFZ attempts to steal username and password information for the Lineage MMORPG.

Removal

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

  • Check for the latest database updates

    First check if your F-Secure security program is using the latest updates, then try scanning the file again.

  • Submit a sample

    After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.

    Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.

  • Exclude a file from further scanning

    If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.

    Note: You need administrative rights to change the settings.

Technical Details

Nilage.AFZ terminates the following security related processes:

  • RavMon.exe
  • EGHOST.EXE
  • MAILMON.EXE
  • KAVPFW.EXE
  • IPARMOR.EXE
  • Ravmond.EXE

It also closes the window titled RavMonClass if it exists.The trojan monitors traffic to the following URLs in order to steal username and password information:

  • https://cs.lineage.co.kr/account/losePassword/losePasswordCheck.asp
  • https://cs.lineage.co.kr/account/forgetPassword/forgetPasswordSub.asp
  • https://cs.lineage.co.kr/account/losePassword/losePasswordForm.asp
  • https://cs.lineage.co.kr/account/forgetPassword/forgetPasswordForm.asp

The stolen data is stored in c:\logo.dat before it is sent to the attacker via email.

File System Changes

Creates these files:

  • %windir%\system32\explorer.exe
  • %windir%\system32\dab1.dll
  • c:\logo.dat

Registry Modifications

Sets these values:

  • HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon Userinit = C:\WINDOWS\system32\userinit.exe,C:\WINDOWS\system32\explorer.exe,