TROJ_FAKEAV.GYK

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 and executes them:

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

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

It drops the following files:

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

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

It creates the following folders:

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

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

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\RunOnce
{random hex value} = "%System Root%\Documents and Settings\All Users\Application Data\{random hex value}\{random hex value}.exe"

Other System Modifications

This Trojan adds the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall

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

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Smart Fortress 2012
DisplayName = "Smart Fortress 2012"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Smart Fortress 2012
ShortcutPath = ""%System Root%\Documents and Settings\All Users\Application Data\{random hex value}\{random hex value}.exe" -u"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Smart Fortress 2012
UninstallString = ""%System Root%\Documents and Settings\All Users\Application Data\{random hex value}\{random hex value}.exe" -u"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Smart Fortress 2012
DisplayIcon = "%System Root%\Documents and Settings\All Users\Application Data\{random hex value}\{random hex value}.exe,0"

Other Details

This Trojan connects to the following possibly malicious URL:

• http://{BLOCKED}eckout.com/p/?&aid=test&lid=3040003&affid=51800&nid=DC0C021C&group=sf&lan=EN
• http://{BLOCKED}eckout.com/p/cp/sf/?lid=3040003&lan=EN&group=sf&reject_url=http%3A%2F%2Fasercheckout.com%2Fp%2Fdecline%2F%3Flid%3D3040003%26lan%3DEN%26group%3Dsf%26nid%3DDC0C021C%26s%3D5%26affid%3D51800%26aid%3Dtest&nid=DC0C021C&s=5&affid=51800&aid=test