What is dc39.exe doing on my computer?

dc39.exe is an alternative name for the PLAY_MP3 trojan. This executable file is downloaded from a website which promises the user a free .MP3 or .MPG player.

Spreading through peer-to-peer file sharing networks, users download files (going by a variety of names) which are disguised as MP3s or MPGs. Instead of sharing music or video these files simply direct the user to a web page from where, they are promised, they can download a free media player.

They will then install the PLAY_MP3.EXE executable, which, when run, installs the Downloader-UA.h downloader. Oddly the user is also shown, and asked to accept, a lengthy license agreement permitting the installation of the adware programs "SurfingEnhancer" and "FBrowsingAdvisor" onto the user`s PC.

Once installed the PLAY_MP3.EXE file can perform a number of malicious activities including displaying adware, installing unwanted programs, hijacking the user`s system and communicating with third parties. The promised media player then turns out to be a web-based player which offers only a limited range of saved tracks.

As a note on naming, trojans may have different versions of themselves, each with a different name and possibly slightly different behavior. These various versions are called strains, and trojans and their strains can also be grouped into families. Play_MP3.exe (and its over 220 alternatively named strains) are part of Downloader-UA.h downloader, Trojan.AdClicker, and Adware Generic2.AARK families.
Non-system processes like dc39.exe originate from software you installed on your system. Since most applications store data on your hard disk and in your system's registry, it is likely that your computer has suffered fragmentation and accumulated invalid entries which can affect your PC's performance.

In Windows Task Manager, you can see what CPU, memory, disk and network utilization is causing the Downloader-UA.h downloader process. To access the Task Manager, hold down the Ctrl Shift Esc keys at the same time. These three buttons are located on the far left of your keyboard.

The dc39.exe is an executable file on your computer's hard drive. This file contains machine code. If you start the software Downloader-UA.h downloader on your PC, the commands contained in dc39.exe will be executed on your PC. For this purpose, the file is loaded into the main memory (RAM) and runs there as a Downloader-UA.h downloader process (also called a task).

Is dc39.exe harmful?

Warning! dc39.exe is considered to be a dangerous process and should be removed. Running issues with this process can increase the risk of malware infection if bugs are present. Scan your system with an anti-malware software to identify unused processes and services that can be safely removed. The dc39.exe was found in the folder C:\Users\\AppData\Local\Temp or �sktop% or �che%\content.ie5\????????\ or %documents%\my pictures\.

Can I stop or remove dc39.exe?

dc39.exe is most likely a virus or Trojan, in which case it should be stopped or removed immediately. We recommend you use an anti-virus software to identify and remove dangerous Downloader-UA.h downloader processes.

Is dc39.exe CPU intensive?

This process is not considered CPU intensive. However, running too many processes on your system may affect your PC’s performance. To reduce system overload, you can use the Microsoft System Configuration Utility (MSConfig) or the Windows Task Manager to manually find and disable processes that launch upon start-up.

Use the Windows Resource Monitor to find out which processes and applications write/read the most on the hard drive, send the most data to the Internet, or use the most memory. To access the Resource Monitor, press the key combination Windows key R and then enter 'resmon'.

Why is dc39.exe giving me errors?

Most dc39 related issues are usually related to problems encountered by the Downloader-UA.h downloader malware that runs it. The safest way to stop these errors is to uninstall the application or remove it using an anti-virus software.