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BKDR_HUPIGON.TST

October 08, 2012
 Analysis by: Michael Cabel
 PLATFORM:

Windows 2000, XP, Server 2003

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW


This backdoor opens a random port to allow a remote user to connect to the affected system. Once a successful connection is established, the remote user executes commands on the affected system.

  TECHNICAL DETAILS

Ports:

Random

File Size:

356,864 bytes

File Type:

PE

Memory Resident:

Yes

Initial Samples Received Date:

11 Nov 2010

Installation

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

  • %Program Files%\WindowsUpdate\winver.exe

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)

Autostart Technique

This backdoor registers itself as a system service to ensure its automatic execution at every system startup by adding the following registry entries:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Creatr Driver Management
Type = 110

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Creatr Driver Management
Start = 2

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Creatr Driver Management
Start = 2

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Creatr Driver Management
ErrorControl = 0

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Creatr Driver Management
ImagePath = %Program Files%\WindowsUpdate\winver.exe

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Creatr Driver Management
DisplayName = "Driver Management"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Creatr Driver Management
ObjectName = "LocalSystem"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Creatr Driver Management
Description = "Creatr Driver Management Service."

Backdoor Routine

This backdoor opens a random port to allow a remote user to connect to the affected system. Once a successful connection is established, the remote user executes commands on the affected system.

It connects to the following URL(s) to send and receive commands from a remote malicious user:

  • mailexp.org

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI PATTERN File:

7.612.05

VSAPI PATTERN Date:

11 Nov 2010

VSAPI PATTERN Date:

11/11/2010 12:00:00 AM

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

Restart in Safe Mode

[ Learn More ]

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_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
    • Creatr Driver Management

Step 4

Restart in normal mode and scan your computer with your Trend Micro product for files detected as BKDR_HUPIGON.TST. 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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