PE_FUJACKS.DV-O

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.

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 drops the following copies of itself into the affected system:

• %System%\drivers\suchost.exe

(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

Autostart Technique

This Trojan adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Explorer = "%System%\drivers\suchost.exe"

Other System Modifications

This Trojan deletes the following folders:

• %System Root%\autorun.inf

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

It modifies the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Advanced\Folder\Hidden\
SHOWALL
CheckedValue = "0"

(Note: The default value data of the said registry entry is 1.)

Dropping Routine

This Trojan drops the following files:

• %Program Files%\Desktop_.ini
• %Program Files%\MSN Gaming Zone\Desktop_.ini
• %Program Files%\Online Services\Desktop_.ini
• %Program Files%\Uninstall Information\Desktop_.ini
• %Program Files%\WinPcap\Desktop_.ini
• %User Temp%\85$$.Ico
• %User Temp%\58$$.Ico
• %Program Files%\xerox\Desktop_.ini
• %Program Files%\xerox\nwwia\Desktop_.ini
• %System Root%\RECYCLER\Desktop_.ini
• %System Root%\RECYCLER\S-1-5-21-436374069-362288127-839522115-1003\Desktop_.ini
• %System Root%\RECYCLER\S-1-5-21-436374069-362288127-839522115-500\Desktop_.ini
• %User Temp%\23$$.Ico
• %System Root%\autorun.inf
• %User Temp%\myUPdatetxt.txt
• %Program Files%\WinPcap\Uninstall.exe
• %System Root%\vcredist_x86.exe
• %System Root%\¡¡¡¡¡¡.exe

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.. %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.. %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

Other Details

This Trojan connects to the following possibly malicious URL:

• http://www.{BLOCKED}g08.com/down/down.txt

This report is generated via an automated analysis system.