Home Malware Programs Trojans Trojan-Dropper.Win32.Delf.br

Trojan-Dropper.Win32.Delf.br

Posted: August 8, 2011

First explicitly defined as a PC threat in 2008, Trojan-Dropper.Win32.Delf.br is a Trojan that installs other types of malicious software, typically attacking the infected computer's network security in the process. SpywareRemove.com malware experts have found that Trojan-Dropper.Win32.Delf.br infections are distributed by being bundled with software updates, and that Trojan-Dropper.Win32.Delf.br is often compressed to avoid being detected before Trojan-Dropper.Win32.Delf.br is installed. Prior to removing Trojan-Dropper.Win32.Delf.br, you may see a wide range of symptoms depending on what other malicious programs Trojan-Dropper.Win32.Delf.br has been instructed to install. However, in almost all cases, Trojan-Dropper.Win32.Delf.br will open network ports, alter the Windows Firewall and attempt to impede security-related software.

How to Avoid Trojan-Dropper.Win32.Delf.br Before It Gets Near Your PC

SpywareRemove.com research team has narrowed down the majority of Trojan-Dropper.Win32.Delf.br infection routes to originate from China, Spain and Australia, with the latter being in the vast majority. Exercising good safety protocol around file sources and websites from such countries may help you avoid a possible Trojan-Dropper.Win32.Delf.br infection.
 
Trojan-Dropper.Win32.Delf.br has also been seen as part of a bundle with various types of software, including criminal programs such as fake key and credit card generators as well as legitimate products like Divx updates. Be careful to download software updates only from official and trustworthy sources to evade this kind of Trojan-Dropper.Win32.Delf.br infection vector.
 
Although Trojan-Dropper.Win32.Delf.br is several years old, SpywareRemove.com malware experts have seen recent Trojan-Dropper.Win32.Delf.br infections in 2011. Keeping your anti-malware software up-to-date may make the difference between catching Trojan-Dropper.Win32.Delf.br before it's done serious damage and not catching Trojan-Dropper.Win32.Delf.br until significant harm has been caused.

A Quick Rundown of the Damage That Trojan-Dropper.Win32.Delf.br Can Cause

Since Trojan-Dropper.Win32.Delf.br can vary its attacks based on remote configuration data, its exact payload and any accompanying Trojans, exact symptoms may vary widely, but some of Trojan-Dropper.Win32.Delf.br's most noticeable and likely attacks include:

  • Altered port settings, especially having ports opened without your permission. Open ports allow Trojan-Dropper.Win32.Delf.br to communicate with remote criminals and send or receive information, including private data like passwords, harmful instructions or malicious installation files.
  • The presence of unusual files, system processes or folders, especially Bifrost-related folders that are hidden with the Windows directory.
  • Unusual system resource usage, as well as side effects of having low memory and other resources. SpywareRemove.com research team has witnessed Trojan-Dropper.Win32.Delf.br using up these resources with independent memory processes and with corrupted versions of native memory processes like iexplore.exe.

While Trojan-Dropper.Win32.Delf.br is on your PC, the probability of being attacked, either by remote criminals or by extra malicious software, is extremely high. Trojan-Dropper.Win32.Delf.br may also come with other infections, including Generic VB.b, Backdoor.Win32.Bifrose.fqs, W32.Spybot.Worm, Trojan.Horst or Worm.RBot.Gen.14. The severity of such a threat and the likelihood of multiple infections makes removing Trojan-Dropper.Win32.Delf.br without an appropriate security product impractical in most cases.

Aliases

TrojanDropperWin32Delfbr

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:



%System%\1.exe File name: %System%\1.exe
File type: Executable File
Mime Type: unknown/exe
%Temp%\div6.tmp\div7.tmp File name: %Temp%\div6.tmp\div7.tmp
File type: Temporary File
Mime Type: unknown/tmp
%Temp%\div1.tmp\div2.tmp File name: %Temp%\div1.tmp\div2.tmp
File type: Temporary File
Mime Type: unknown/tmp
%CommonAppData%\DivX\Setup\DivXSetup.log File name: %CommonAppData%\DivX\Setup\DivXSetup.log
Mime Type: unknown/log
%Windir%\server.exe File name: %Windir%\server.exe
File type: Executable File
Mime Type: unknown/exe

Registry Modifications

The following newly produced Registry Values are:

HKEY..\..\{Value}HKEY_LOCAL_MACHINE\SOFTWARE\DivX\InstallHKEY..\..\..\..{Subkeys}HKEY_LOCAL_MACHINE\SOFTWARE\DivX\Install\Setup\BundleGroupsHKEY_LOCAL_MACHINE\SOFTWARE\DivX\Install\SetupHKEY_LOCAL_MACHINE\SOFTWARE\DivXHKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{433KB0Q2-4K13-V7Q3-I460-ER0H3WASU83X}HKEY_LOCAL_MACHINE\SOFTWARE\DivX\Install\Setup\BundleGroups\divx.com\_private\BannerGroups\defaultHKEY_LOCAL_MACHINE\SOFTWARE\DivX\Install\Setup\BundleGroups\divx.com\_private\BannerGroupsHKEY_LOCAL_MACHINE\SOFTWARE\DivX\Install\Setup\BundleGroups\divx.com\_privateHKEY_LOCAL_MACHINE\SOFTWARE\DivX\Install\Setup\BundleGroups\divx.com
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