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TROJ_PROXY.WMI

April 15, 2011
 Analysis by: Jon Timbre
 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 may be dropped by other malware. It may be unknowingly downloaded by a user while visiting malicious websites.

  TECHNICAL DETAILS

File Size:

73,216 bytes

File Type:

DLL

Memory Resident:

No

Initial Samples Received Date:

08 Nov 2010

Arrival Details

This Trojan may be dropped by other malware.

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

Other System Modifications

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

HKEY_CLASSES_ROOT\CLSID\{96AFBE69-C3B0-4b00-8578-D933D2896EE2}

HKEY_CLASSES_ROOT\sp\CLSID
(Default) = "{96AFBE69-C3B0-4b00-8578-D933D2896EE2}"

HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\
Windows\CURRENTVERSION\Explorer\
ShellIconOverlayIdentifiers\sp
(Default) = "{96AFBE69-C3B0-4b00-8578-D933D2896EE2}"

HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\
Windows\CURRENTVERSION\Shell Extensions\
Approved
{96AFBE69-C3B0-4b00-8578-D933D2896EE2} = "sp"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SPService

HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\
WINDOWS NT\CURRENTVERSION\SvcHost
netsvc = SPService

  SOLUTION

Minimum Scan Engine:

8.900

Step 1

For Windows ME and XP users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Delete this registry key

[ 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_CLASSES_ROOT\CLSID\
    • {96AFBE69-C3B0-4b00-8578-D933D2896EE2}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\Windows\CURRENTVERSION\
    Explorer\ShellIconOverlayIdentifiers\
    • sp

Step 3

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_LOCAL_MACHINE\SOFTWARE\MICROSOFT\Windows\
    CURRENTVERSION\Shell Extensions\Approved
    • {96AFBE69-C3B0-4b00-8578-D933D2896EE2} = sp
  • In HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\SvcHost
    • netsvc = SPService
  • In HKEY_CLASSES_ROOT\sp\CLSID
    • (Default) = {96AFBE69-C3B0-4b00-8578-D933D2896EE2}

Step 4

Scan your computer with your Trend Micro product to delete files detected as TROJ_PROXY.WMI 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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