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Win Defragmenter

Posted: December 2, 2010

Threat Metric

Threat Level: 10/10
Infected PCs: 21
First Seen: December 1, 2010
OS(es) Affected: Windows

Win Defragmenter is a rogue defragmenter (or 'defragger') that's closely tied to other rogue security programs that use similar appearances and identical attacks under different program names. Win Defragmenter will offer many services besides defragging, but every single one of Win Defragmenter's services is fake. Tolerating Win Defragmenter on your PC will only subject you to overblown fake system alerts, files disappearing from your view and programs shutting down at random intervals. You should try to remove Win Defragmenter as soon as you find it on your computer since Win Defragmenter presents a significant security risk.

Win Defragmenter: False Product and Real PC Threat

Win Defragmenter is a new version of an old rogue defragger that goes by many names, such as Good Memory, Fast Disk, My Disk, Disk OK, Win Scanner, HDD OK and HDD Rescue. You may get infected by Win Defragmenter when you visit a website that hosts malicious advertisements, or by downloading Win Defragmenter from a criminal website that makes Win Defragmenter sound like a useful defragger.

Supposedly, Win Defragmenter offers in-depth system diagnostics, including an analysis of RAM, proactive system protection, junk file cleanup and memory optimization. In reality, Win Defragmenter offers none of these services, but you will see errors popping up that make you think that Win Defragmenter is detecting threats:

32% of HDD space is unreadable

System Restore
The system has been restored after a critical error. Data integrity and hard drive integrity verification required.

Read time of hard drive clusters less than 500 ms

Requested registry access is not allowed. Registry defragmentation required

Bad sectors on hard drive or damaged file allocation table

Ram Temperature is 83 C. Optimization is required for normal operation.

Windows detected a hard drive problem.
A hard drive error occurred while starting the application.

Data Safety Problem. System integrity is at risk.

GPU RAM temperature is critically high. Urgent RAM memory optimization is required to prevent system crash

Windows cannot find [executable file]. Make sure you typed the name correctly, and then try again. To search for a file, click the Start button, and then click Search.

Drive C initializing error

Hard drive doesn’t respond to system commands

Critical Error
A critical error has occurred while indexing data stored on hard drive. System restart required.

Registry Error – Critical Error

Don't think for one second that any of these warnings actually tell you anything about your operating system! Win Defragmenter is preprogrammed to create these messages at irregular intervals; it's all part of a scheme to get a hold on your credit card number.

The Escalating Nature of Win Defragmenter Attacks

Win Defragmenter has more problems in store for those who learn to disregard Win Defragmenter's fake system warnings, such as:

  • File visibility issues. Win Defragmenter uses a Trojan to perform certain actions like make it appear as though your files and folders have vanished or moved to different locations. Don't be frightened by this unusual trick; Win Defragmenter hasn't harmed the files themselves, only made it appear as though they were harmed by attacking the Windows file-viewing interface.
  • Application crashes. Programs may refuse to run when first launched or may crash after a certain period of time, with or without error messages. Win Defragmenter would like you to believe that the programs themselves are infected or damaged, but the truth is that Win Defragmenter is closing them to stop you from accessing other software.
  • Win Defragmenter will insert startup entries into your Windows Registry. These entries let Win Defragmenter and other malware run whenever Windows starts, even if you don't deliberately open the programs. There's no way to disable this without diving into the Registry yourself or using anti-malware programs to remove the entries as part of a system scan.

Most PC users will find it convenient to use an anti-malware scanner to solve their problems, since manually removing Registry entries and other components of Win Defragmenter can cause even more serious problems. Deleting Win Defragmenter shouldn't be a serious challenge as long as you use software that's reputable and make sure that Win Defragmenter isn't active during the scan.

Win Defragmenter

One Comment

  • Donald Pribnow says:

    I just needed to chime in and let people know that Best Buy is the worst with regard to getting your laptop fixed. Should you have a virus probably the most these people will do is install the exact same program you can install on your own and run it, but they will charge you $100. And they do not comprehend what they're doing.