TROJ_DROPPER.VTP

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.

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
urlmon = "%Application Data%\urlmon.exe"

Other System Modifications

This Trojan deletes the following files:

• %User Temp%\EPEDD7~1.CMD
• %User Temp%\ARS615~1.CMD
• %User Temp%\UET321~1.CMD
• %User Temp%\GST5C4~1.CMD

(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.)

Dropping Routine

This Trojan drops the following files:

• %Application Data%\0000c37e.exe
• %Application Data%\0000d551.exe
• %Application Data%\0000fd1c.exe
• %Application Data%\00012788.exe
• %User Temp%\EPEDD7F.tmp.cmd
• %User Temp%\ARS615.tmp.cmd
• %User Temp%\UET3217.tmp.cmd
• %User Temp%\GST5C44.tmp.cmd

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Windows\Profiles\{user name}\Application Data on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Application Data on Windows NT, and C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003.. %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.)

Other Details

This Trojan connects to the following possibly malicious URL:

• http://{BLOCKED}i.com/images/2nd_menu_images/3.exe
• http://www.{BLOCKED}e-cassissier.com/webmail/4.exe
• http://www.{BLOCKED}b.fr/dates/3.exe
• http://{BLOCKED}edya.com/sattas/3.exe
• http://{BLOCKED}g.com/afyu/index.php?{random characters}
• http://{BLOCKED}r.com/nygul/index.php?{random characters}
• http://{BLOCKED}psigoood.ru/kleo/index.php?{random characters}

This report is generated via an automated analysis system.