Threat Encyclopedia

BKDR_DEMTRANC.AB

Publish date: 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:Backdoor

  • Destructiveness:No

  • Encrypted: No

  • In the wild: Yes

OVERVIEW


This backdoor connects to a URL to send gathered information and receive arbitrary commands from a remote malicious user.

This backdoor may be dropped by other malware.

It gathers certain information on the affected computer.

TECHNICAL DETAILS

File Size:

48,640 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

08 Dec 2011

Payload:

Collects system information

Arrival Details

This backdoor may be dropped by the following malware:

  • TROJ_PIDIEF.JK

Information Theft

This backdoor gathers the following information on the affected computer:

  • Host name
  • User name
  • IP address
  • Operating system version
  • Proxy server

NOTES:

It connects to the following URL to send gathered information and receive arbitrary commands from a remote malicious user:

  • {BLOCKED}.{BLOCKED}.154.157

It has the following capabilities:

  • Download and execute other files
  • Execute arbitrary commands

SOLUTION

Minimum Scan Engine:

9.200

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

Remove the malware/grayware file that dropped/downloaded BKDR_DEMTRANC.AB

     
    • TROJ_PIDIEF.JK

Step 3

Identify and terminate files detected as BKDR_DEMTRANC.AB

[ Learn More ]
  1. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  2. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 4

Scan your computer with your Trend Micro product to delete files detected as BKDR_DEMTRANC.AB. 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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