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TROJ_SUSPECT.KF

October 08, 2012
 Analysis by: Christopher Daniel So
 ALIASES:

W32/SUSPECT.KF!tr (Fortinet)

 PLATFORM:

Windows 2000, XP, Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW


This Trojan may be unknowingly downloaded by a user while visiting malicious websites.

  TECHNICAL DETAILS

File Size:

478,208 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

04 Jan 2011

Arrival Details

This Trojan may be unknowingly downloaded by a user while visiting malicious websites.

Installation

This Trojan drops the following copies of itself into the affected system:

  • %User Temp%\ICReinstall\22047641.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.)

It drops the following files:

  • %Desktop%\Continue FoxTab FLV Player Installation.lnk
  • %Desktop%\FoxTab FLV Player.lnk

(Note: %Desktop% is the current user's desktop, which is usually C:\Windows\Profiles\{user name}\Desktop on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Desktop on Windows NT, and C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003.)

It creates the following folders:

  • %Program Files%\FoxTabFlvPlayer
  • %Start Menu%\Programs\FoxTab FLV Player
  • %User Temp%\{C62E5287-91CA-4E88-B7D9-0A50A65E1701}
  • %User Temp%\{A6CC2CA2-2779-4F10-88BF-A3C9EB874C24}
  • %User Temp%\{8D2D08B2-FF4D-4589-B466-5EA22D5C138D}
  • %User Temp%\ish1516735230
  • %User Temp%\ish1122091322
  • %User Temp%\is730966025
  • %User Temp%\ICReinstall

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Profiles\{user name}\Start Menu on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu on Windows NT and C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003.. %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.)

Other System Modifications

This Trojan adds the following registry keys:

HKEY_CURRENT_USER\Software\InstallCore

HKEY_LOCAL_MACHINE\SOFTWARE\FX - FLV Player

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\FX - FLV Player
TC = "545156"

  SOLUTION

Minimum Scan Engine:

8.900

NOTES:

Trend customers:

    Keep your pattern and scan engine files updated. Trend Micro antivirus software can clean or remove most types of computer threats. Malware, though, such as Trojans, scripts, overwriting viruses and joke programs which are identified as uncleanable, should simply be deleted.

All Internet users:

  • Use HouseCall - the Trend Micro online threat scanner to check for malware that may already be on your PC.
  • Catch malware/grayware before they affect your PC or network. Secure your Web world with Trend Micro products that offer the best anti-threat and content security solutions for home users, corporate users, and ISPs. Go here for more information on Trend Micro products that fit your needs.


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