Analysis by: Michael Cabel
 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

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 requires its main component to successfully perform its intended routine. However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size: 34,304 bytes
File Type: DLL
Memory Resident: No
Initial Samples Received Date: 14 May 2010
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.

Other Details

This Trojan connects to the following possibly malicious URL:

  • {BLOCKED}.{BLOCKED}.70.141
  • lb1.www.ms.{BLOCKED}s.net
  • {BLOCKED}r.blu.cb3.glbdns.microsoft.com
  • us.co1.cb3.{BLOCKED}s.microsoft.com

It requires its main component to successfully perform its intended routine.

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

NOTES:
This Trojan may be used to monitor the processes running on the affected machine. It enumerates all open windows and retrieves the process ID of each of the open windows.

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: 7.166.07
FIRST VSAPI PATTERN DATE: 14 May 2010
VSAPI OPR PATTERN File: 7.167.00
VSAPI OPR PATTERN Date: 14 May 2010

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 to delete files detected as TROJ_AGENTT.SMS. 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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