TROJ_FAKEAV.DEJ

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 files:

• %Desktop%\Live Security Platinum.lnk
• %Start Menu%\Programs\Live Security Platinum\Live Security Platinum.lnk
• %System Root%\Documents and Settings\All Users\Application Data\{random hex string}\{random hex string}
• %System Root%\Documents and Settings\All Users\Application Data\{random hex string}\{random hex string}.ico

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

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

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

• %Start Menu%\Programs\Live Security Platinum
• %System Root%\Documents and Settings\All Users\Application Data\{random hex string}

(Note: %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista and 7.. %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 string} = "%System Root%\Documents and Settings\All Users\Application Data\{random hex string}\{random hex string}.exe"

Other System Modifications

This Trojan adds the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
Installer

HKEY_CURRENT_USER\Software\Microsoft\
Installer\Products

HKEY_CURRENT_USER\Software\Microsoft\
Installer\Products\{random hex value}

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Live Security Platinum

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Installer\Products\{random hex value}
(Default) = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Live Security Platinum
DisplayName = "Live Security Platinum"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Live Security Platinum
ShortcutPath = ""%System Root%\Documents and Settings\All Users\Application Data\{random hex string}\{random hex string}.exe" -u"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Live Security Platinum
UninstallString = ""%System Root%\Documents and Settings\All Users\Application Data\{random hex string}\{random hex string}.exe" -u"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Live Security Platinum
DisplayIcon = "%System Root%\Documents and Settings\All Users\Application Data\{random hex string}\{random hex string}.ico,0"

Other Details

This Trojan connects to the following possibly malicious URL:

• http://{BLOCKED}.{BLOCKED}.224.31/api/urls/?ts={value}&affid={value}