TROJ_PAKES.BHW

October 09, 2012
 Analysis by: Kathleen Notario
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This Trojan 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:

165,888 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

29 Nov 2011

Arrival Details

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

  • %User Profile%\Application Data\B0B2D\6817C.exe

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

It drops the following non-malicious file:

  • %User Profile%\Application Data\B0B2D\D6E3.0B2

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

It creates the following folders:

  • %User Profile%\Application Data\B0B2D
  • %Program Files%\2D6E3
  • %Program Files%\LP
  • %Program Files%\LP\7CCB

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

Autostart Technique

This Trojan adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows NT\CurrentVersion\Winlogon
Shell = "explorer.exe,%User Profile%\Application Data\B0B2D\6817C.exe"

Other System Modifications

This Trojan modifies the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings
ProxyEnable = "1"

(Note: The default value data of the said registry entry is 0.)

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Hardware Profiles\0001\Software\
Microsoft\windows\CurrentVersion\
Internet Settings
ProxyEnable = "1"

(Note: The default value data of the said registry entry is 0.)

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Hardware Profiles\Current\Software\
Microsoft\windows\CurrentVersion\
Internet Settings
ProxyEnable = "1"

(Note: The default value data of the said registry entry is 0.)

HKEY_CURRENT_CONFIG\Software\Microsoft\
windows\CurrentVersion\Internet Settings
ProxyEnable = "1"

(Note: The default value data of the said registry entry is 0.)

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://{BLOCKED}oredlegion.com/305986.png
  • http://{BLOCKED}oredlegion.com/16354.png
  • http://{BLOCKED}oredlegion.com/716354_m61.png
  • http://{BLOCKED}tek.net/thelab/wiley.jpg
  • http://{BLOCKED}wledgesutra.com/img/temp/hi.cgi
  • http://{BLOCKED}wledgesutra.com/img/temp/head.png
  • http://{BLOCKED}tleon.com/13 .gif
  • http://{BLOCKED}tleon.com/132.gif
  • http://{BLOCKED}tleon.com/133.gif
  • http://{BLOCKED}wsermmorpg.com/images/cpc.png
  • http://{BLOCKED}wsermmorpg.com/images/cpc2.png
  • http://{BLOCKED}wsermmorpg.com/img/intel.gif
  • http://{BLOCKED}wsermmorpg.com/img/intel.jpg
  • http://{BLOCKED}webpages.com/christian12.jpg
  • http://{BLOCKED}webpages.com/christian13.jpg
  • http://{BLOCKED}webpages.com/christian14.jpg
  • http://{BLOCKED}-countymech.com/g/livechat.png
  • http://{BLOCKED}-countymech.com/g/logo.png
  • http://{BLOCKED}-countymech.com/g/133.jpg
  • http://{BLOCKED}-countymech.com/g/134.jpg
  • http://{BLOCKED}ctronicstheory.com/pics/valley.png
  • http://{BLOCKED}ctronicstheory.com/pics/sun.png
  • http://{BLOCKED}ssicbattletech.com/lhous3.gif
  • http://{BLOCKED}ssicbattletech.com/lhous4.gif
  • http://{BLOCKED}ssicbattletech.com/lhous5.gif
  • http://{BLOCKED}ssicbattletech.com/lhous6.gif
  • http://{BLOCKED}ineeringcrossing.com/images/misc/23525.png
  • http://{BLOCKED}ineeringcrossing.com/images/misc/64646.png
  • http://{BLOCKED}ldorderlive.com
  • http://{BLOCKED}perstumprs.com
  • http://{BLOCKED}nsaerosystems.com
  • http://{BLOCKED}eridershools.com
  • http://{BLOCKED}bigdrophills.com
  • http://{BLOCKED}bonlineaccess.com
  • http://{BLOCKED}inepdahelpforyou.com
  • http://{BLOCKED}arkreddomas.com
  • http://{BLOCKED}nsfersakkonline.com
  • http://{BLOCKED}kupdomaintolevel.com

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

8.610.06

FIRST VSAPI PATTERN DATE:

29 Nov 2011

VSAPI OPR PATTERN File:

8.611.00

VSAPI OPR PATTERN Date:

29 Nov 2011

Scan your computer with your Trend Micro product to delete files detected as TROJ_PAKES.BHW. 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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