TSPY_LEGMIR.AQZ

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TypeSpyware

In the wild: No

Destructive: No

Language: English

Systems affected: Windows 98, ME, NT, 2000, XP, Server 2003

Encrypted: No

Overall risk rating:

Low

Reported detections:

Low

System  impact:

High

Information exposure:

High
 

Description:

This spyware steals information, typically account names and passwords, related to certain online games.

It saves the gathered information in a file which it sends to a remote malicious user via email using its own Simple Mail Transfer Protocol (SMTP) engine. The said routine allows it to send email messages without using a mail application like Microsoft Outlook.

Description created:  Feb 13, 2007



TECHNICAL DETAILS



Initial samples received on:  Jan 15, 2007

File type: PE

Memory resident: Yes  

File size: 14,336 Bytes

Details:

This spyware usually arrives as a file dropped by other malware or as a file downloaded unknowingly by a user when visiting malicious Web sites.

Upon execution, it drops a copy of itself as MPPDS.EXE in the Windows folder. It also drops its component file, using the same file name of its initially executed copy but with a file name extension of DLL in the Windows system folder. The said .DLL file is also detected as TSPY_LEGMIR.AQZ and is then injected into several running processes.

It then creates the following registry entry to ensure its automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
mppds = "%Windows%\mppds.exe"

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

This spyware steals information, typically account names and passwords, related to certain online games.

It saves the gathered information in a file which it sends to a remote malicious user via email using its own Simple Mail Transfer Protocol (SMTP) engine. The said routine allows it to send email messages without using a mail application like Microsoft Outlook.

It runs on Windows 98, ME, NT, 2000, XP, and Server 2003.




SOLUTION


Minimum scan engine version needed: 8.000

Download the latest scan engine

Virus pattern version needed : 6.695.00

Pattern release date:  Dec 15, 2009


Important note: The "Minimum scan engine" refers to the earliest Trend Micro scan engine version guaranteed to detect this threat. However, Trend Micro strongly recommends that you update to the latest version in order to get comprehensive protection. Download the latest scan engine here.

Solution:

Important Windows ME/XP Cleaning Instructions

Users running Windows ME and XP must disable System Restore to allow full scanning of infected computers.

Users running other Windows versions can proceed with the succeeding solution set(s).

Restarting in Safe Mode

This spyware has characteristics that require the computer to be restarted in safe mode. Go to this page for instructions on how to restart your computer in safe mode.

Editing the Registry

This spyware modifies the computer's registry. Users affected by this spyware may need to modify or delete specific registry keys or entries. For detailed information regarding registry editing, please refer to the following articles from Microsoft:

  1. HOW TO: Backup, Edit, and Restore the Registry in Windows 95, Windows 98, and Windows ME
  2. HOW TO: Backup, Edit, and Restore the Registry in Windows NT 4.0
  3. HOW TO: Backup, Edit, and Restore the Registry in Windows 2000
  4. HOW TO: Back Up, Edit, and Restore the Registry in Windows XP and Server 2003

Removing Autostart Entries from the Registry

Removing autostart entries from the registry prevents the spyware from executing at startup.

If the registry entries below are not found, the spyware may not have executed as of detection. If so, proceed to the succeeding solution set.

  1. Open Registry Editor. Click Start>Run, type REGEDIT, then press Enter.
  2. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>
    Windows>CurrentVersion>Run
  3. In the right panel, locate and delete the entry:
    mppds = "%Windows%\mppds.exe"
    (Note: %Windows% is the default Windows folder, usually C:\Windows or C:\WINNT.)
  4. Close Registry Editor.

Running Trend Micro Antivirus

If you are currently running in safe mode, please restart your computer normally before performing the following solution.

Scan your computer with Trend Micro antivirus and delete files detected as TSPY_LEGMIR.AQZ. To do this, Trend Micro customers must download the latest virus pattern file and scan their computer. Other Internet users can use HouseCall, the Trend Micro online virus scanner.