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BAT_CENTERPOS.A

September 26, 2015
 Analysis by: Anthony Joe Melgarejo
 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  TECHNICAL DETAILS

File Size:

763 bytes

File Type:

BAT

Memory Resident:

No

Initial Samples Received Date:

23 Sep 2015

Payload:

Downloads files

Arrival Details

This Trojan may be downloaded from the following remote site(s):

  • http://{BLOCKED}.{BLOCKED}.178.109/file/X.bat

Autostart Technique

This Trojan starts the following services:

  • CenterPoint

Download Routine

This Trojan connects to the following website(s) to download and execute a malicious file:

  • https://www.dropbox.com/s/{BLOCKED}sxow5h9ei/CenterPoint.exe?dl=1

It saves the files it downloads using the following names:

  • C:\Windows\Microsoft.NET\Framework\{version}\CenterPoint.exe - detected as BKDR_POSCENTER.A

NOTES:

{version} can be any of the following:

  • v2.0.50727
  • v3.0
  • v3.5
  • v4.0.30319

It searches for InstallUtil.exe in the abovementioned order of .NET Framework version directories.

It uses the directory of the version where it first finds InstallUtil.exe.

It uses InstallUtil.exe. to execute/install CenterPoint.exe.

It uses the following command to start the CenterPoint service.

  • net start centerpoint

  SOLUTION

Minimum Scan Engine:

9.750

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

Remove malware/grayware files dropped/downloaded by BAT_CENTERPOS.A. (Note: Please skip this step if the threats listed below have already been removed.)

     
    • BKDR_CENTERPOS.A

Step 3

Scan your computer with your Trend Micro product to delete files detected as BAT_CENTERPOS.A. 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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