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TROJ_FAKESYSD.WV

October 09, 2012
 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 executes then deletes itself afterward.

  TECHNICAL DETAILS

File Size:

453,632 bytes

Memory Resident:

Yes

Initial Samples Received Date:

31 Jan 2012

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 executes then deletes itself afterward.

Other System Modifications

This Trojan adds the following registry entries as part of its installation routine:

HKEY_CURRENT_USER\Control Panel
5761b2dc-ce77-4bfa-b965-6f33b1867cf2 =

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://{BLOCKED}binew.com/up.php?0Q9oBPXEN0uECUgzEJ95RQsajjnvq1aG3F/2q5oNowaH1WY=

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

Under QA

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

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER\Control Panel
    • 5761b2dc-ce77-4bfa-b965-6f33b1867cf2 = ""

Step 3

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