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TSPY_FAREIT.SMGU

December 04, 2013
 Analysis by: Jimelle Monteser
 ALIASES:

Trojan-PWS.Tepfer (Ikarus), Trojan-PSW.Win32.Tepfer.sjsy (Kaspersky), PWS:Win32/Fareit.E (Microsoft), Win32/PSW.Fareit.A trojan (NOD32)

 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:

135,168 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

28 Nov 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 keys:

HKEY_CLASSES_ROOT\Cad.Document

HKEY_CLASSES_ROOT\Cad.Document\DefaultIcon

HKEY_CLASSES_ROOT\Cad.Document\shell

HKEY_CLASSES_ROOT\Cad.Document\shell\
open

HKEY_CLASSES_ROOT\Cad.Document\shell\
open\command

HKEY_CLASSES_ROOT\Cad.Document\shell\
print

HKEY_CLASSES_ROOT\Cad.Document\shell\
print\command

HKEY_CLASSES_ROOT\Cad.Document\shell\
printto

HKEY_CLASSES_ROOT\Cad.Document\shell\
printto\command

HKEY_CURRENT_USER\Software\WinRAR

HKEY_CURRENT_USER\Software\Local AppWizard-Generated Applications

HKEY_CURRENT_USER\Software\Local AppWizard-Generated Applications\
Cad

HKEY_CURRENT_USER\Software\Local AppWizard-Generated Applications\
Cad\Recent File List

HKEY_CURRENT_USER\Software\Local AppWizard-Generated Applications\
Cad\Settings

HKEY_LOCAL_MACHINE\Cad.Document

HKEY_LOCAL_MACHINE\Cad.Document\DefaultIcon

HKEY_LOCAL_MACHINE\Cad.Document\shell

HKEY_LOCAL_MACHINE\Cad.Document\shell\
open

HKEY_LOCAL_MACHINE\Cad.Document\shell\
open\command

HKEY_LOCAL_MACHINE\Cad.Document\shell\
print

HKEY_LOCAL_MACHINE\Cad.Document\shell\
print\command

HKEY_LOCAL_MACHINE\Cad.Document\shell\
printto

HKEY_LOCAL_MACHINE\Cad.Document\shell\
printto\command

It adds the following registry entries:

HKEY_CLASSES_ROOT\Cad.Document
Default = "Cad Document"

HKEY_CLASSES_ROOT\Cad.Document
Default = "{malware path}\{malware filename}.exe,0"

HKEY_CLASSES_ROOT\Cad.Document\shell\
open\command
Default = "{malware path}\{malware filename}.exe "%1""

HKEY_CLASSES_ROOT\Cad.Document\shell\
print\command
Default = "{malware path}\{malware filename}.exe /p "%1""

HKEY_CLASSES_ROOT\Cad.Document\shell\
printto\command
Default = "{malware path}\{malware filename}.exe /pt "%1" "%2" "%3" "%4""

HKEY_LOCAL_MACHINE\Cad.Document
Default = "Cad Document"

HKEY_LOCAL_MACHINE\Cad.Document
Default = "{malware path}\{malware filename}.exe,0"

HKEY_LOCAL_MACHINE\Cad.Document\shell\
open\command
Default = "{malware path}\{malware filename}.exe "%1""

HKEY_LOCAL_MACHINE\Cad.Document\shell\
print\command
Default = "{malware path}\{malware filename}.exe /p "%1""

HKEY_LOCAL_MACHINE\Cad.Document\shell\
printto\command
Default = "{malware path}\{malware filename}.exe /pt "%1" "%2" "%3" "%4""

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

Other Details

This spyware connects to the following possibly malicious URL:

  • http://{BLOCKED}.{BLOCKED}.166.215/pnn/ga.php
  • http://{BLOCKED}.{BLOCKED}.189.32/pnn/ga.php
  • http://{BLOCKED}.{BLOCKED}.46.241/pnn/ga.php
  • http://{BLOCKED}.{BLOCKED}.166.215/our/1.exe
  • http://{BLOCKED}.{BLOCKED}.166.215/our/2.exe
  • http://{BLOCKED}.{BLOCKED}.166.215/our/3.exe
  • http://{BLOCKED}.{BLOCKED}.189.32/our/1.exe
  • http://{BLOCKED}.{BLOCKED}.46.241/our/1.exe

  SOLUTION

Minimum Scan Engine:

9.700

FIRST VSAPI PATTERN FILE:

10.440.05

FIRST VSAPI PATTERN DATE:

28 Nov 2013

VSAPI OPR PATTERN File:

10.441.00

VSAPI OPR PATTERN Date:

29 Nov 2013

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

 
  • In HKEY_CLASSES_ROOT
    • Cad.Document
  • In HKEY_CURRENT_USER\Software
    • WinRAR
  • In HKEY_CURRENT_USER\Software
    • Local AppWizard-Generated Applications
  • In HKEY_LOCAL_MACHINE
    • Cad.Document

Step 3

Scan your computer with your Trend Micro product to delete files detected as TSPY_FAREIT.SMGU. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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