TROJ_ONLINEG.JZT

Malware type: Trojan

Aliases: Trojan-PSW.Win32.OnLineGames.gpq (Kaspersky), PWS-Zhengtu.gen (McAfee), Infostealer.Gampass (Symantec), TR/PSW.OnlineGames.gpq (Avira),

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: 

This Trojan may be downloaded from remote sites by other malware. It may be dropped by other malware. It may be downloaded unknowingly by a user when visiting malicious Web sites.

It drops copies of itself. It drops files/components. It injects threads into normal processes.

It creates registry entries to enable its automatic execution at every system startup.

For additional information about this threat, see:

Description created: Nov. 11, 2007 11:45:27 PM GMT -0800


TECHNICAL DETAILS


File type: EXE

Memory resident:  Yes

Size of malware: 14,416 bytes

Initial samples received on: Nov 11, 2007

Details:

This Trojan may be downloaded from remote site(s) by other malware.

It may be dropped by other malware.

It may be downloaded unknowingly by a user when visiting malicious Web site(s).

It drops a copy(ies) of itself as %Windows%\GenProtect.exe. It drops the file(s)/component(s) %System%\GenProtect.dll which is also detected by Trend Micro as TROJ_ONLINEG.JZT.

(Note: %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT. %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

It injects threads into the normal process(es) EXPLORER.EXE

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

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


SOLUTION


Minimum scan engine version needed: 8.300


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 malware 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.

Removing Autostart Entry from the Registry

This solution deletes a registry entry added by this malware. Before performing the steps below, make sure you know how to back up the registry and how to restore it if a problem occurs. Refer to this Microsoft article for more information about modifying your computer's registry.

  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:
    GenProtect = "%Windows%\GenProtect.exe"
    (Note: %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.)
  4. Close Registry Editor.

Deleting the Malware File(s)

  1. Right-click Start then click Search... or Find..., depending on the version of Windows you are running.
  2. In the Named input box, type:
    • %System%\GenProtect.dll (also detected as TROJ_ONLINEG.JZT)
  3. In the Look In drop-down list, select the drive that contains Windows, then press Enter.
  4. Once located, select the file then press SHIFT%20DELETE.
  5. Repeat steps 2-4 for the following file(s):

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 TROJ_ONLINEG.JZT. 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.




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