TSPY_TEPFER.CHB

This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It deletes itself after execution.

Arrival Details

This spyware 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 spyware drops the following file(s)/component(s):

• %User Temp%\{random numbers}.bat

(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 spyware adds the following registry keys:

HKEY_CURRENT_USER\Software\WinRAR

It adds the following registry entries:

HKEY_CURRENT_USER\Software\WinRAR
HWID = "{random values}"

Download Routine

This spyware connects to the following website(s) to download and execute a malicious file:

• http://www.{BLOCKED}rl.eu/images/file1.exe
• http://www.{BLOCKED}l.eu/images/file2.exe
• http://www.{BLOCKED}dra.is/tmp/file1.exe
• http://www.{BLOCKED}dra.is/tmp/file2.exe
• http://{BLOCKED}net.com/tmp/file1.exe
• http://{BLOCKED}net.com/tmp/file2.exe

It saves the files it downloads using the following names:

• %User Temp%\{random digit}.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.)

Other Details

This spyware connects to the following possibly malicious URL:

• http://kita.{BLOCKED}ar.de/tmp/r1.php
• http://{BLOCKED}gtoncountylive.com/tmp/r1.php
• http://{BLOCKED}rten-leibeck.de/tmp/r1.php
• http://{BLOCKED}iscovery.ca/tmp/r1.php

It deletes itself after execution.