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TSPY_FAREIT.QT

May 12, 2013
 ALIASES:

PWS:Win32/Fareit.gen!A (Microsoft)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 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.

It deletes itself after execution.

  TECHNICAL DETAILS

File Size:

197,120 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

03 May 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_CURRENT_USER\Software\WinRAR

HKEY_CURRENT_USER\Software\Classes\
clsid

HKEY_CURRENT_USER\clsid\{fbeb8a05-beee-4442-804e-409d6c4515e9}

HKEY_CURRENT_USER\clsid\{fbeb8a05-beee-4442-804e-409d6c4515e9}\
InprocServer32

HKEY_LOCAL_MACHINE\software\microsoft\
windows\currentversion\Policies\
Explorer\Run

It adds the following registry entries:

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

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

HKEY_CURRENT_USER\Software\WinRAR
EDE53641A80DE89B95005B3C5641FF44 = "{random values}"

HKEY_CURRENT_USER\Software\WinRAR
C6DC1BA5740265B0BD2DF97CCE0A5CB2 = "{random values}"

HKEY_CURRENT_USER\clsid\{fbeb8a05-beee-4442-804e-409d6c4515e9}\
InprocServer32
ThreadingModel = "Both"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
Explorer\Run
65429 = "%User Temp%\msfuugru.scr"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft
AE9F6ACF = "{random values}"

Dropping Routine

This spyware drops the following files:

  • %User Temp%\49421.exe
  • %User Temp%\52984.exe
  • %System Root%\RECYCLER
  • %System Root%\RECYCLER\S-1-5-21-4025279379-4087772427-2915903831-500
  • @
  • n
  • %System Root%\RECYCLER\S-1-5-18
  • %User Temp%\msfuugru.scr

(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.. %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

Other Details

This spyware deletes itself after execution.

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.300

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_CURRENT_USER\Software
    • WinRAR
  • In HKEY_CURRENT_USER\Software\Classes
    • clsid
  • In HKEY_CURRENT_USER\clsid
    • {fbeb8a05-beee-4442-804e-409d6c4515e9}
  • In HKEY_CURRENT_USER\clsid\{fbeb8a05-beee-4442-804e-409d6c4515e9}
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\Policies\Explorer
    • Run

Step 3

Delete this registry value

[ 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_CURRENT_USER\Software\WinRAR
    • HWID = "{random values}"
  • In HKEY_CURRENT_USER\Software\WinRAR
    • Client Hash = "{random values}"
  • In HKEY_CURRENT_USER\Software\WinRAR
    • EDE53641A80DE89B95005B3C5641FF44 = "{random values}"
  • In HKEY_CURRENT_USER\Software\WinRAR
    • C6DC1BA5740265B0BD2DF97CCE0A5CB2 = "{random values}"
  • In HKEY_CURRENT_USER\clsid\{fbeb8a05-beee-4442-804e-409d6c4515e9}\InprocServer32
    • ThreadingModel = "Both"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run
    • 65429 = "%User Temp%\msfuugru.scr"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft
    • AE9F6ACF = "{random values}"

Step 4

Search and delete these components

[ Learn More ]
There may be some components that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %User Temp%\49421.exe
  • %User Temp%\52984.exe
  • %System Root%\RECYCLER
  • %System Root%\RECYCLER\S-1-5-21-4025279379-4087772427-2915903831-500
  • @
  • n
  • %System Root%\RECYCLER\S-1-5-18
  • %User Temp%\msfuugru.scr

Step 5

Scan your computer with your Trend Micro product to delete files detected as TSPY_FAREIT.QT. 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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