TROJ_DROPPER.TD

October 09, 2012
 Analysis by: Sabrina Lei Sioting
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • 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.

  TECHNICAL DETAILS

File Size:

153,600 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

23 Jun 2012

Payload:

Drops files

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.

Installation

This Trojan drops the following files:

  • %Program Files%\Common Files\ODBC\mscmos.sys

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

Dropping Routine

This Trojan drops the following files:

  • %Program Files%\Common Files\ODBC\JET.dll - detected as BKDR_AGENT.SS
  • %Program Files%\Common Files\ODBC\MSODBC.dll - detected as BKDR_AGENT.SS

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

  SOLUTION

Minimum Scan Engine:

9.200

VSAPI OPR PATTERN File:

9.211.00

VSAPI OPR PATTERN Date:

23 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

Remove malware files dropped/downloaded by TROJ_DROPPER.TD

Step 3

Search and delete this file

[ Learn More ]
There may be some component 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.
  • %Program Files%\Common Files\ODBC\mscmos.sys

Step 4

Scan your computer with your Trend Micro product to delete files detected as TROJ_DROPPER.TD. 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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