Home Malware Programs Trojans Tool-TPatch

Tool-TPatch

Posted: August 14, 2011

Tool-TPatch is a backdoor trojan that grants remote criminals access to your PC, potentially including complete control over the system. Although most early Tool-TPatch reports were seen years ago, SpywareRemove.com malware researchers have witnessed recent Tool-TPatch outbreaks as late as mid-August 2011, and Tool-TPatch should be considered an actively-distributed and high-level security risk for any Windows computer. Because Tool-TPatch runs as a background process and may try to imitate the names of native system processes, overt indications of a Tool-TPatch infection are rare. You should use an appropriate security program to detect and delete Tool-TPatch infections before serious harm occurs.

Tool-TPatch's Many Names and Expressions of Hostility Against Your PC

Tool-TPatch tries to avoid notice when it's on your PC; SpywareRemove.com malware researchers have found that many Tool-TPatch infections will try to name their processes to look similar to 'svchost.exe,' a natural Windows process. Combined with Tool-TPatch's use of Registry-based automatic startup techniques, Tool-TPatch can remain active at all times without ever giving you a reason to notice it.

In spite of its near-invisibility, Tool-TPatch is a high-level PC security threat and allows remote criminals to have total access to your PC. This may be observed in altered network and security-related settings, especially with regards to your firewall and network ports. Remote attacks that Tool-TPatch enables can be the cause of:

  • Loss of privacy and private information due to Tool-TPatch's use of spyware functions such as keylogging or installation of separate spyware programs.
  • The presence of fake rogue security programs that create large amounts of false infection warnings and other system errors.
  • DDoS attacks that force your PC to flood websites and shut them down due to traffic overflow.
  • Problems accessing various programs, particularly maintenance and security programs such as anti-virus scanners, Task Manager and MSConfig.

Tool-TPatch is known by many different aliases, including not-a-Virus.Patch.QuarkXPress, Backdoor.Graybird, Backdoor.Graybird!sd6, Win-Trojan/Xema.variant, Trojan.Feutel.AV, Trojan-Dropper.Win32.Agent.ale, Win32/Secdrop.109568!Trojan and Trojan-Dropper.Win32.VB.dp.

The Unfriendly Friends of Tool-TPatch That You Should Also Watch Out For

Although our SpywareRemove.com malware research team has found many solitary instances of Tool-TPatch infections, just as many Tool-TPatch attacks have also used the assistance of other trojans, viruses and similarly malicious software. Some of the most common infections that have been seen working next to Tool-TPatch are Trojan-PSW.Gampass, Virus.Win32.Delf.ICC, Trojan-Downloader.Win32.Delf.cq, Virus.Win32.Tipa, Virus.Win32.Bancos and Zlob.

The majority of these Tool-TPatch-allied infections are dropper trojans and, like Tool-TPatch, able to install other harmful programs. Due to the combination of security attacks and malicious software propagation that a Tool-TPatch infection indicates, trying to detect or delete Tool-TPatch and related PC threats without external assistance is inadvisable. However, some high-quality anti-malware products are capable of removing Tool-TPatch and similar trojans without serious difficulties. As is usually the case for any infection that uses an automatic startup routine, Safe Mode may be useful for disabling Tool-TPatch prior to removing it.

Technical Details

File System Modifications

Tutorials: If you wish to learn how to remove malware components manually, you can read the tutorials on how to find malware, kill unwanted processes, remove malicious DLLs and delete other harmful files. Always be sure to back up your PC before making any changes.

The following files were created in the system:



%Temp%\2ae4224e.exe File name: %Temp%\2ae4224e.exe
File type: Executable File
Mime Type: unknown/exe
%Temp%\8.exe File name: %Temp%\8.exe
File type: Executable File
Mime Type: unknown/exe
C:\Documents and Settings\<username>\Application Data\.exe File name: C:\Documents and Settings\<username>\Application Data\.exe
File type: Executable File
Mime Type: unknown/exe
%CommonPrograms%\Startup\dll32.exe File name: %CommonPrograms%\Startup\dll32.exe
File type: Executable File
Mime Type: unknown/exe

Registry Modifications

The following newly produced Registry Values are:

HKEY..\..\..\..{RegistryKeys}HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\%RANDOM CHARACTERS%HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\..{RunKeys}HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServices\[RANDOM CODE NUMBER]

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