TROJ_AGENT.BCXJ

October 09, 2012
 Analysis by: Mark Joseph Manahan
 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

Infection Channel:

Downloaded from the Internet, Dropped by other malware

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.

It does not have any propagation routine.

It does not have any backdoor routine.

It does not drop any other file.

It does not have any information-stealing capability.

This file contains a URL where it connects to possibly download other files. However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size:

184,320 bytes

File Type:

DLL

Memory Resident:

Yes

Initial Samples Received Date:

29 Jun 2012

Payload:

Connects to URLs/IPs

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.

Propagation

This Trojan does not have any propagation routine.

Backdoor Routine

This Trojan does not have any backdoor routine.

Dropping Routine

This Trojan does not drop any other file.

Information Theft

This Trojan does not have any information-stealing capability.

Other Details

This Trojan requires the following additional components to properly run:

  • C:\Recycler\restore.dat

This file contains a URL where it connects to possibly download other files. As of this writing, this file contains the following URLs:

  • {BLOCKED}mcodat.com

However, as of this writing, the said sites are inaccessible.

NOTES:

It does not have rootkit capabilities.

It does not exploit any vulnerability.

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

9.224.04

FIRST VSAPI PATTERN DATE:

29 Jun 2012

VSAPI OPR PATTERN File:

9.225.00

VSAPI OPR PATTERN Date:

30 Jun 2012

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

Scan your computer with your Trend Micro product and note files detected as TROJ_AGENT.BCXJ

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Search and delete the file detected as TROJ_AGENT.BCXJ

*Note: Some component files may be hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden files and folders in the search result.

To manually delete a malware/grayware file from the affected system:

  1. Right-click Start then click Search....
  2. In the Named input box, type the name of the file that was detected earlier.
  3. In the Look In drop-down list, select My Computer then press Enter.
  4. Once located, select the file then press SHIFT+DELETE to delete it.

Step 5

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