Disk Optimizer

Disk Optimizer Description

Disk Optimizer (DiskOptimizer) as its name indicates, is a system defragmenter and optimizing tool. However Disk Optimizer is not a normal optimizing tool; this one was especially created by criminals to swindle gullible users. Disk Optimizer come from the FakeSysDef family and can enter a system via Trojans or malicious websites. When inside, Disk Optimizer will run a system scan which will appear to scan the hard drive and memory before producing fabricated results. Once the scan is done Disk Optimizer will display the following message "11 Errors detected! Defragmentation is required".

Disk Optimizer may also prevent a victim from accessing applications including Registry Editor and Task Manager. A victim may also experience frequent redirects to malicious websites promoting Disk Optimizer or the victim will be blocked from other security websites. Do not allow Disk Optimizer to scare you into purchasing its non-existent full version. Do not believe any of the scan or error reports generated by Disk Optimizer, instead use a recognized rogueware removal tool to extinguish Disk Optimizer from your PC.

Some of the known clones of Disk Optimizer include HDD Diagnostic, Windows Fix Disk, Rogue.PC Repair, Windows Repair, Windows Restore, Data Repair, Windows Scan, Rogue.File Restore, Disk OK, Ultra Defragger, HDD Plus, HDD Rescue, Windows Safemode, PUP.PC Health Kit, Scanner, Rogue.Windows Startup Repair, Good Memory, HDD Tools, HDD Fix, PC Cleaner Pro 2012, Rogue.Windows Fix, HDD Low, Fast Disk, Rogue.Master Utilities, Rogue.File Recovery, Rogue.Windows Error Recovery, Smart HDD, Rogue.Windows Vista System Repair, Windows XP Fix, HDD Repair, Disk Repair, Rogue.File Integrity Checker, Memory Optimizer, Rogue.System Recovery, HDD Control, Win Disk, Rogue.Data Recovery, Windows Recovery, System Repair, Rogue.System Check, System Defragmenter, Windows XP Restore, Win HDD, Memory Fixer, Windows Repairing System, Disk Recovery, Windows Recovery Series, Windows XP Repair, Smart Defragmenter, Windows XP Recovery, Smart Data Recovery, Rogue.Windows XP System Repair, Windows 7 Repair, Windows Diagnostic, Windows Disk, WindowsTool and Computer Fix.
Aliases: a variant of Win32/Kryptik.JRI [NOD32], Cryptic.BXE [AVG], FraudTool.Win32.FakeAV.hdd (v) [VIPRE], Mal/FakeAV-EA [Sophos], Medium Risk Malware [Prevx], Packer.Win32.Agent.bk [Rising], Trojan.Agent/Gen-FakeSoft [SUPERAntiSpyware], Trojan.Agent/Gen-FraudWare [SUPERAntiSpyware], Trojan:Win32/FakeSysdef [Microsoft] and W32/Krap.AON!tr [Fortinet].

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Solutions: Your computer may have malware hiding in memory that prevents any program, including SpyHunter, from executing on your computer. Follow to download SpyHunter and gain access to the Internet:
  • Use an alternative browser. Malware may disable your browser. If you're using IE, for example, and having problems downloading SpyHunter, you should open Firefox, Chrome or Safari browser instead.
  • Use a removable media. Download SpyHunter on another clean computer, burn it to a USB flash drive, DVD/CD, or any preferred removable media, then install it on your infected computer and run SpyHunter's malware scanner.
  • Start Windows in Safe Mode. If you can not access your Window's desktop, reboot your computer in 'Safe Mode with Networking' and install SpyHunter in Safe Mode.
  • IE Users: Disable proxy server for Internet Explorer to browse the web with Internet Explorer or update your anti-spyware program. Malware modifies your Windows settings to use a proxy server to prevent you from browsing the web with IE.

If you still can't install SpyHunter? View other possible causes of installation issues.

Technical Information

Infection Statistics


Our MalwareTracker shows malware activity across the world. Explore real-time data of Disk Optimizer outbreaks and other threats from global to local level.

File System Details

Disk Optimizer creates the following file(s):
# File Name Size MD5 Detection Count
1 Uninstall Disk Optimizer.lnk 33
2 %AllUsersProfile%\Application Data\oyVxqDdzcBhxzpC.exe 382,976 6f869870d0ccb2ec1cca7ddec75232e1 12
3 %AllUsersProfile%\Application Data\FCfUcyewLU.exe 478,720 86ea3641fb8b7b93cb5c245a98861d00 11
4 %AllUsersProfile%\Application Data\CiOCLFAGVr.dll 427,520 ad3cf4481aa53448b3dd40ada60a19f6 10

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