TROJ_FAKEALE.ZVD

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It deletes itself after execution.

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Trojan creates the following folders:

• %System Root%\DOCUME~1
• %System Root%\DOCUME~1\Wilbert
• %User Profile%\LOCALS~1
• %User Temp%\nsy6.tmp

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)

Other System Modifications

This Trojan deletes the following files:

• %User Temp%\nst4.tmp
• %User Temp%\nsy6.tmp
• %User Temp%\tempfile.ini
• %System Root%\DelUS.bat

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.. %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

Dropping Routine

This Trojan drops the following files:

• %User Temp%\nsy6.tmp\stack.dll
• %User Temp%\nsy6.tmp\ChkClient120207.dll
• %User Temp%\nsy6.tmp\IEFunctions.dll
• %User Temp%\nsy6.tmp\DLLWebCount120207.dll
• %User Temp%\nsy6.tmp\SelfDelete.dll
• \DelUS.bat

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)

Other Details

This Trojan connects to the following possibly malicious URL:

• http://update.{BLOCKED}fend.co.kr/installchk/pcroomchk.php
• http://log.{BLOCKED}e.co.kr/logexp.php?{random characters}

It deletes itself after execution.

This report is generated via an automated analysis system.