Modified by: Cris Nowell Pantanilla
 PLATFORM:

Windows 2000, Windows XP, Windows 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 dropped by other malware.

  TECHNICAL DETAILS

File Size: 4,096 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 24 Mar 2012

Arrival Details

This Trojan may be dropped by the following malware:

  • TROJ_MDROP.TPC

NOTES:

It searches for the following components which are also dropped by TROJ_MDROP.TPC:

  • %Application Data%\Active\IconCacheBt.DAT
  • %Application Data%\Active\IconCacheEt.DAT

The aforementioned files are detected by Trend Micro as BKDR_AGENT.TPB.

If found, it copies and loads these .DAT files as %User Temp%\{malware filename}.Dll.

As a result, malicious routines of the loaded file(s) are also exhibited on the affected system.

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: 8.860.05
FIRST VSAPI PATTERN DATE: 24 Mar 2012
VSAPI OPR PATTERN File: 8.861.00
VSAPI OPR PATTERN Date: 24 Mar 2012

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 the malware/grayware file that dropped/downloaded TROJ_MDROP.TPB

    TROJ_MDROP.TPC

Step 3

Remove the malware/grayware file dropped/downloaded by TROJ_MDROP.TPB

    BKDR_AGENT.TPB

Step 4

Identify and terminate files detected as TROJ_MDROP.TPB

[ Learn More ]
  1. Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. 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.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 5

Search and delete this file

[ Learn More ]
There may be some files that are 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.  %User Temp%\IconCacheBt.dll

Step 6

Scan your computer with your Trend Micro product to delete files detected as TROJ_MDROP.TPB. 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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