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TSPY_KEYLOG.AG

October 08, 2012
 Analysis by: Sabrina Lei Sioting
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW


This spyware may connect to a remote site to send and receive information. It may also download possibly malicious files.

The gathered information may be sent to a remote malicious user. However, it may require other components to perform the said action.

It may gather specific drive information from the affected system. It could also launch legitimate applications.

This spyware may arrive bundled with malware packages as a malware component. It may be dropped by other malware.

It uses common file icons to trick a user into thinking that the files are legitimate.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

PE

Memory Resident:

No

Initial Samples Received Date:

19 Feb 2011

Arrival Details

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

It may be dropped by other malware.

Installation

This spyware uses common file icons to trick a user into thinking that the files are legitimate.

Other System Modifications

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
System
EnableLUA = "0"

NOTES:
This spyware may connect to a remote site to send and receive information. It may also download possibly malicious files.

It may also gather the following drive information from the affected system:

  • TotalSize
  • VolumeName
  • FreeSpace
  • DriveType
  • IsReady
  • FileSystem
  • DriveLetter
The gathered information may be sent to a remote malicious user. However, it may require other components to perform the said action.

It may also launch the following legitimate applications:
  • notepad.exe
  • calc.exe
  • cdplayer.exe
  • defrag.exe
  • scandskw.exe
  • explorer.exe
  • pbrush.exe

  SOLUTION

Minimum Scan Engine:

8.900

FIRST VSAPI PATTERN FILE:

7.844.10

FIRST VSAPI PATTERN DATE:

19 Feb 2011

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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
    • EnableLUA = 0

Step 3

Scan your computer with your Trend Micro product to delete files detected as TSPY_KEYLOG.AG. 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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