Analysis by: jasperm
 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

It executes the .DLL file, wintyes.dll, also detected as TROJ_TALERET.D, which is located in the %Temp% folder using RUNDLL32.EXE.

This Trojan may arrive bundled with malware packages as a malware component. It may be dropped by other malware. It may be unknowingly downloaded by a user while visiting malicious websites. However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size: Varies
File Type: PE
Memory Resident: Yes
Initial Samples Received Date: 27 Dec 2010
Payload: Connects to URLs/Ips

Arrival Details

This Trojan may arrive bundled with malware packages as a malware component.

It may be dropped by other malware.

It may be unknowingly downloaded by a user while visiting malicious websites.

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

Other Details

This Trojan attempts to access the following websites to download files, which are possibly malicious:

  • http://{BLOCKED}1.{BLOCKED}5.222.4
  • http://{BLOCKED}1.{BLOCKED}8.10.78
  • http://{BLOCKED}1.{BLOCKED}2.97.112

It does the following:

  • Executes the following .DLL file also detected as TROJ_TALERET.D, which is located in the %Temp% folder using RUNDLL32.EXE:
    • wintyes.dll

(Note: %Temp% is the Windows Temporary folder, which is usually C:\Windows\Temp or C:\WINNT\Temp.)

  SOLUTION

Minimum Scan Engine: 8.900
VSAPI PATTERN File: 7.730.11
VSAPI PATTERN Date: 27 Dec 2010
VSAPI PATTERN Date: 12/27/2010 12:00:00 AM

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

Identify and terminate files detected as TROJ_TALERET.D

[ 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 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_TALERET.D. 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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