TROJ_JORIK.GTV

This Trojan may be unknowingly downloaded by a user while visiting malicious websites.

Arrival Details

This Trojan may be unknowingly downloaded by a user while visiting malicious websites.

Installation

This Trojan drops and executes the following files:

• %User Temp%\hrYYMzbw.exe - detected as TROJ_JORIK.GTV
• %User Temp%\PsNbpVoYeDspj.exe - detected as TROJ_JORIK.GTV
• %User Temp%\{5randomchars}.exe - detected as TROJ_JORIK.GTV

(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.)

It drops the following non-malicious files:

• %User Temp%\google.exe
• %User Temp%\teamwin.exe
• %Application Data%\25FEJUYXLR.exe
• %Application Data%\EQR2XYXBTC.exe

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

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
Windows Team = "%User Temp%\hrYYMzbw.exe"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Google = "%User Temp%\PsNbpVoYeDspj.exe"