Home Malware Programs Rogue Anti-Spyware Programs Personal Defender 2009

Personal Defender 2009

Posted: October 31, 2008

Threat Metric

Threat Level: 10/10
Infected PCs: 67
First Seen: July 24, 2009
OS(es) Affected: Windows

ScreenshotPersonal Defender 2009, or PersonalDefender 2009, is a rogue anti-spyware program that appears on your computer with the help of a Trojan found bundled in a filename called mupd1_2_1711951.exe. The filename mupd1_2_1711951.exe executes fake alert messages that imitate a Windows Firewall notification. The fake Windows Firewall notification states that the Trojan-Keylogger.WIN32.Fung has been found on your computer and suggests if you want to enable protection. If you click on the "Enable Protection" button, you will be directed to a page where you are advised to download and install Personal Defender 2009. The fake Windows Firewall notification may cease, if you locate the mupd1_2_1711951.exe file and delete it.

Once Personal Defender 2009 infiltrates your system, it may start to annoy you repeatedly with even more popups or system alert messages used as scare tactics. Personal Defender 2009 ultimate goal is to scare you into purchasing a full version of the Personal Defender 2009 program.

Personal Defender 2009 does not live up to its expectations as it is not really capable of removing parasites or viruses. Personal Defender 2009 may also hijack your browser and redirect it to personaldefender2009.com.

Personal Defender 2009 should not be purchased under any circumstances. If you have Personal Defender 2009 on your system, then it is recommended that you use a dependable anti-spyware program to locate and remove Personal Defender 2009 and its files.


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:

mupd1_2_1165664.exe File name: mupd1_2_1165664.exe
Size: 98.3 KB (98304 bytes)
MD5: e05c64b0fc2610fa1d4809785ebe81aa
Detection count: 64
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: December 11, 2009
personaldefender2009[1].exe File name: personaldefender2009[1].exe
Size: 7.52 MB (7524864 bytes)
MD5: bf50e2bd724553a6d49b504879b6e2e3
Detection count: 49
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: December 11, 2009
pdefendr.exe File name: pdefendr.exe
Size: 2.99 MB (2990080 bytes)
MD5: b05f51c7b22a13fd302131bfeca0b63a
Detection count: 46
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: December 11, 2009


  • Kevin says:

    I had this fake security pop up on my computer and it still is but because of this site I didn't insall the program! Good thing. But I still can't get that stupid window from popping up all the time!

  • Geekapolluza says:

    I discovered a new variant tonight on a friend’s machine. Looking in the registry, it referred to an apparently random directory name in the user profile. The EXE also appeared to have a short random alphabetic name. Malwarebytes said it removed it, but it came right back on the next reboot. I dug into the registry and ripped out the keys, and found and deleted the files.

    After removing it and rebooting, the infection appeared to be gone, but IE wouldn’t display any web pages, although the internet would connect and there was data traffic. The reason it wouldn’t display any web pages was that the browser connection settings had been modified to point to a proxy server at, which I believe means that a web server had been installed on the computer and was intended to act as a proxy for all web pages, possibly scanning them for important information such as userid’s and passwords and then sending that information to a remote recipient. I don’t know if the web server was installed to a different location from the Personal Defender EXE; it is possible that it was, because I could see traffic even though there were no programs that I knew of that were using the web, even in the background. Possibly the configuration was faulty and the web server didn’t function properly, and this is why I noticed it. I believe that IF it functioned correctly, then I would have believed the infection was gone, while a very insidious part of it remained, silently siphoning off userid’s and passwords for websites.

    After you have cleaned up the infection, be sure to check your browser’s connection settings and verify that it does not point to a proxy server at, using port 5555. I could disable this usage of the proxy server, but I couldn't convince myself that there still wasn't a rouge web server installed somewhere on the PC functioning and active, as I could see a lot of network traffic when there should have been none.

    To clear up this part of the infection I used a system restore point to two days prior.

    Good luck with particularly nasty infection.