TROJ_VBINDER.KL

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:

• %Application Data%\onload.exe
• %Application Data%\sdsetup.exe
• %Application Data%\yahootoolbarsetup
• %User Temp%\is-{random}.tmp\gtapi.dll
• %User Temp%\is-{random}.tmp\GTBHelper.dll
• %User Temp%\is-{random}.tmp\helper.dll
• %User Temp%\is-{random}.tmp\iMonitor.exe
• %User Temp%\is-{random}.tmp\InnoHelpers.dll
• %User Temp%\is-{random}.tmp\isxdl.dll
• %User Temp%\is-{random}.tmp\PCTLicHelper.dll
• %User Temp%\is-{random}.tmp\PCTLicReset.dll
• %User Temp%\is-{random}.tmp\PCTWSC.dll
• %User Temp%\is-{random}.tmp\SecurityUtil.dll
• %User Temp%\is-{random}.tmp\_isetup
• %User Temp%\is-{random}.tmp\_isetup\_shfoldr.dll
• %User Temp%\Setup Log {yyyy}-{mm}-{dd}#001.txt

(Note: %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.. %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 creates the following folders:

• %User Temp%\conf
• %All User's Profile%\Application Data\TEMP

(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.)

Other System Modifications

This Trojan adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Licenses

HKEY_LOCAL_MACHINE\SOFTWARE\PCTools