What is Win32/FakeSysdef:
Threat Classification: Rogue Software/PUP
Win32/FakeSysdef is presented as legitimate software that will clean and optimize your system. Although, it is considered as a Rogue Software/PUP (potentially unwanted program).
When you install Win32/FakeSysdef on your system, it will display fake warnings stating that there are multiple issues detected like hard drive and system-related problems. Then it offers to download a defragmenter program which will be able to optimize your system performance.
In order to fix the problems, you will need to buy the full version of the software. Win32/FakeSysdef might also warn you about corrupted Windows system files. The removal of such files might produce unwanted error messages or to crash your system. All alerts, scan results or pop-up messages are fake.
Win32/FakeSysdef may display fake security alerts and warnings like the following or similar:
“Windows – Delayed Write Filed
Windows was unable to save all the data for the file \System32\496A8300. The data has been lost. This error may be caused by a failure of your computer hardware.”
RAM memory usage is critically high. RAM memory failure.”
Exe file is corrupted and can’t be run. Hard drive scan required.”
Win32/FakeSysdef is usually bundled with other free software products and is being installed by default when the user accepts the EULA while performing an express/recommended installation of that software. The possible distribution of Win32/FakeSysdef varies but is not limited to – installing third-party programs, free software products, downloading e-mail attachments, clicking on ads or banners etc..
Win32/FakeSysdef may block other legitimate software on your computer such as anti-virus or anti-malware programs. This rogue software may modify your browser settings, and will run hidden in the background. The removal process might be quite a challenge for a novice. If you do not feel confident enough, we suggest you to remove this virus automatically.
!!! Please note that these infections could potentially bring up other malware to your computer and even cause a loss of data. Please do not underestimate such threats.
There are two ways to remove this infection. It is totally up to you to decide which way you want to go:
1. Automatic Removal Method (recommended for regular or novice users) using a Professional Malware Removal Software.
2. Manual Removal (recommended for PC Experts or Enthusiasts).
Automatic Win32/FakeSysdef Removal:
We recommend using SpyHunter Malware Security Suite.
You can download and install SpyHunter to detect Win32/FakeSysdef and remove it, by clicking the button below. Once installed, SpyHunter will automatically scan and detect all threats present on your system, but in order to use it as a removal tool, you need to purchase a subscription.
SpyHunter will automatically scan and detect all threats present on your system.
Learn more about SpyHunter (EULA). You can find Install Instructions here: (LINK) SpyHunter`s free diagnosis offers free scans and detection. You can remove the detected files, processes and registry entries manually, by yourself, or purchase the full version to perform an automatic removal and also to receive free professional help with any malware related queries by their technical support department.
Manual Win32/FakeSysdef Removal:
!!! Please note: You can remove Win32/FakeSysdef manually, however, you should proceed at your own risk, as any of the interventions might render you system inoperable. Therefore this manual removal method is highly recommended for PC Experts or Enthusiasts. For regular users, MalwareKillers.com recommends using SpyHunter or any other reputable security application.
1. Remove Win32/FakeSysdef by restoring your system to a previous state.
1. Reboot your computer into Safe Mode with Command Prompt. To do this, turn your computer off and then back on and immediately when you see anything on the screen, start tapping the F8 key on your keyboard.
***For Windows 8:
If you are using Windows 8, you need to hold the Shift button and tap the F8 key repeatedly, this should boot you into the new advanced “recovery mode”, where you can choose the advanced repair options to show up. On the next screen, you will need to click on the Troubleshoot option, then select Advanced Options and select Windows Startup Settings. Click on the Restart button, and you should now be able to see the Advanced Boot Options screen.
2. Using the arrow keys on your keyboard, select the option “Safe Mode with Command Prompt” and press Enter on your keyboard.
3. When the command prompt loads up, type:
Windows XP: C:\windows\system32\restore\rstrui.exe and press Enter
Windows Vista/7/8: C:\windows\system32\rstrui.exe and press Enter
4. System Restore should initialize, and you will be displayed a list of restore points. Try using a restore point created just before the date and time before the Your-computer-has-been-locked virus has infected your computer.
When System Restore has completed its task, start your computer in Windows normal mode, you would need to perform a scan with anti-spyware software as the infection might still be on the system.
2. Delete any registry keys, folders or files related to Win32/FakeSysdef by checking the following locations:
First, you can try to go to Control panel and click on Programs and Features (Windows Vista/7/8/10) or Add/Remove Programs (Windows XP) and check the Uninstall Programs` List for any entry related to Win32/FakeSysdef. If you find such, double-click on it and try to remove it. Although, bear in mind that you might not be able to remove it directly from the list.
*(Start -> Control Panel -> Programs and Features or Add/Remove Programs).
1. Delete the following registry entries/values, if found:
HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionWinlogon [random.exe]
2. Search and delete files or folder named “Win32/FakeSysdef”:
random.exe like: fIJsmsUwPvQ.exe, ajyWlxBiFK.exe, yiMjvSkpKyOa.exe, tnjpHMjVwEJfO.exe, QbyEjDmJqwk.exe, VxackkhcHAVmMDE.exe, UNrcJcrVSu.exe, gsLFMTxcnODDjts.exe, vMPGbQAVIT.exe