Analysis by: Jaime Benigno Reyes

ALIASES:

PWS:Win32/Fareit.gen!C (Microsoft), Trojan-PSW.Win32.Tepfer.nztc (Kaspersky)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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.

  TECHNICAL DETAILS

File Size: 128,512 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 18 Jul 2013

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.

Other System Modifications

This spyware adds the following registry entries:

HKEY_CURRENT_USER\Software\WinRAR
Client Hash = "{random value}"

HKEY_CURRENT_USER\Software\WinRAR
{random GUID} = "{random value}"

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

Download Routine

This spyware accesses the following websites to download files:

  • http://www.{BLOCKED}ionimediterraneo.it/FP0gd6.exe
  • http://{BLOCKED}m.gr/8h5gjBh.exe
  • http://preview.{BLOCKED}-trainers.com/V2YE.exe
  • http://www.{BLOCKED}leteventspace.com/7UNFVh.exe

It saves the files it downloads using the following names:

  • %User Temp%\{random number}.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://{BLOCKED}extdoor.com:443/ponyb/gate.php
  • http://{BLOCKED}seniorswish.org:443/ponyb/gate.php
  • http://{BLOCKED}leads.com:8080/ponyb/gate.php
  • http://{BLOCKED}illssuck.com:8080/ponyb/gate.php