TROJ_FAKEAV.GBO

Installation

This Trojan drops the following files:

• %System Root%\Documents and Settings\All Users\Application Data\{random}\{random} - encypted component
• %User Desktop%\Smart Fortress 2012.lnk - shortcut file
• %Start Menu%\Programs\Smart Fortress 2012\Smart Fortress 2012.lnk - shortcut file

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Profiles\{user name}\Start Menu on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu on Windows NT and C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003.)

It drops the following copies of itself into the affected system:

• %System Root%\Documents and Settings\All Users\Application Data\{random}\{random}.exe

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

It creates the following folders:

• %System Root%\Documents and Settings\All Users\Application Data\{random}
• %Start Menu%\Programs\Smart Fortress 2012

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Profiles\{user name}\Start Menu on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu on Windows NT and C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003.)

Other System Modifications

This Trojan adds the following registry keys:

HKEY_CLASSES_ROOT\%s

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Smart Fortress 2012

HKEY_CLASSES_ROOT\F4D55

It adds the following registry entries:

HKEY_CLASSES_ROOT\F4D55\shell\
open\command
@ = "%System Root%\Documents and Settings\All Users\Application Data\{random}\{random}.exe" -s "%1" %*

It modifies the following registry entries:

HKEY_CLASSES_ROOT\.exe
@ = F4D55

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

NOTES:

Upon execution, it displays the following fake alerts:

It displays fake alerts that warn users of infection. It also displays fake scanning results of the affected system. It then asks for users to purchase it once scanning is completed. If users decide to purchase the rogue product, users are directed to the following fake purchase site asking for sensitive information, such as credit card numbers:

• http://{BLOCKED}8.{BLOCKED}9.101.184

Below is a screenshot of the fake purchase page:

The following registries are added/modified so that it the malware runs every time an executable file is executed by the affected user:

HKEY_CLASSES_ROOT\F4D55\shell\open\command
@ = ""%System Root%\Documents and Settings\All Users\Application Data\{random}\{random}.exe" -s"

HKEY_CLASSES_ROOT\.exe
@ = "F4D55"