TROJ_DLOADE.DAT

Malware type: Trojan

In the wild: Yes

Destructive: No

Language: English

Platform: Windows 98, ME, NT, 2000, XP, Server 2003

Encrypted: No

Overall risk rating:

Reported infections:

Damage potential:

Low

Distribution potential:

Low

Description: 

A Trojan horse program is a malware that is not capable of automatically spreading to other systems. Trojans are usually downloaded from the Internet and installed by unsuspecting users.

Trojans typically carry payloads or other malicious actions that can range from the mildly annoying to the irreparably destructive. They may also modify system settings to automatically start. Restoring affected systems may require procedures other than scanning with an antivirus program.

For additional information about this threat, see:

Description created: Dec. 18, 2009 10:44:37 PM GMT -0800


TECHNICAL DETAILS


File type: PE

Memory resident:  Yes

Size of malware: 50,176 Bytes

Initial samples received on: Dec 16, 2009

Details:

Installation

This Trojan drops the following copy(ies) of itself:

  • %Program Files%\COMMON FILES\System\mplay64.exe

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files. )

It drops the following file(s):

  • %User Temp%\~cfdata.txt

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003. )

Autostart Techniques

This Trojan creates the following registry entry(ies) to enable its automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\
Windows\CURRENTVERSION\Run
mplay64 = "%Program Files%\common files\system\mplay64.exe /noerrorinfo"

Other System Modifications

This Trojan creates the following registry key(s)/entry(ies):

HKEY_CURRENT_USER\SOFTWARE\CTFSoftware\
mplay64
Info = "Use Add/Remove Programs in Control Panel to Uninstall"

HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\
Windows\CURRENTVERSION\Uninstall\
mplay64
DisplayIcon = "%Program Files%\common files\system\mplay64.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\
Windows\CURRENTVERSION\Uninstall\
mplay64
DisplayName = "mplay64"

HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\
Windows\CURRENTVERSION\Uninstall\
mplay64
UninstallString = "%Program Files%\common files\system\mplay64.exe /uninstall"

Affected Platforms

This Trojan runs on Windows 98, ME, NT, 2000, XP, Server 2003.



SOLUTION


Minimum scan engine version needed: 8.900


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:

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 1: Identify and terminate files detected as TROJ_DLOADE.DAT  [learn how]

*Note:

  1. For Windows 98 and ME users, Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. 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.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

 Step 2:  Delete this registry value  [learn how]

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\SOFTWARE\CTFSoftware\
    mplay64
    • Info = "Use Add/Remove Programs in Control Panel to Uninstall"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\
    Windows\CURRENTVERSION\Run
    • mplay64 = "%Program Files%\common files\system\mplay64.exe /noerrorinfo"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\
    Windows\CURRENTVERSION\Uninstall\
    mplay64
    • DisplayIcon = "%Program Files%\common files\system\mplay64.exe"
    • DisplayName = "mplay64"
    • UninstallString = "%Program Files%\common files\system\mplay64.exe /uninstall"

 Step 3:  Search and delete these files  [learn how]

*Note: There may be some component files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.

  • %Program Files%\COMMON FILES\System\mplay64.exe
  • %User Temp%\~cfdata.txt

 Step 4: Scan your computer with your Trend Micro product to delete files detected as TROJ_DLOADE.DAT  

*Note: 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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