TROJ_BANBRA.DQ

October 08, 2012
 Analysis by: Michael Cabel
 PLATFORM:

Windows 2000, XP, Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan may be downloaded by other malware/grayware/spyware from remote sites. It arrives as a component bundled with malware/grayware packages.

  TECHNICAL DETAILS

File Size:

662,528 bytes

File Type:

PE

Memory Resident:

Yes

Initial Samples Received Date:

06 Mar 2010

Payload:

Steals information, Drops files

Arrival Details

This Trojan may be downloaded by other malware/grayware/spyware from remote sites.

It arrives as a component bundled with malware/grayware packages.

Installation

This Trojan drops the following non-malicious file:

  • %Windows%\control.ctr

(Note: %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.)

Autostart Technique

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
msne = {Malware Path and File Name}

Other System Modifications

This Trojan adds the following registry keys:

HKEY_CURRENT_USER\WinRegnw

It adds the following registry entries as part of its installation routine:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
star1 = %System%\Winrun.exe

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
star2 = %System%\ischot.exe

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
star3 = %System%\Xred1.exe

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
star4 = %System%\Zred2.exe

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
star6 = %System%\MscheldB.exe

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
star7 = %System%\Mscheldncx.exe

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
star8 = %System%\svscheld.exe

Other Details

This Trojan does the following:

  • It may capture snapshot images and mouse clicks on the affected system.
  • It sends the data it gathers using its own Simple Mail Transfer Protocol (SMTP) to the following remote server:
    • {BLOCKED}5.google.com
  • It uses the following email addresses:
    • {BLOCKED}m@Corporate.com.br
    • {BLOCKED}iso@hmail.com

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI OPR PATTERN File:

06.896.12

VSAPI OPR PATTERN Date:

06 Mar 2010

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Terminate a process file/s detected as TROJ_BANBRA.DQ

[ Learn More ]

*Note: If the detected file/s is/are not displayed in theWindows Task Manager, continue doing the next steps.

Step 3

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
    • WinRegnw

Step 4

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\Microsoft\Windows\CurrentVersion\Run
    • star1 = %System%\Winrun.exe
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • star2 = %System%\ischot.exe
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • star3 = %System%\Xred1.exe
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • star4 = %System%\Zred2.exe
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • star6 = %System%\MscheldB.exe
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • star7 = %System%\Mscheldncx.exe
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • star8 = %System%\svscheld.exe
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    • msne = {Malware Path and File Name}

Step 5

Scan your computer with your Trend Micro product to delete files detected as TROJ_BANBRA.DQ. 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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