Malware slow PC

badday · Jun 20, 2017

Hi! So I've encountered this problem, after about 20 mins of starting my pc, a program named "windows defender" (no, it's not the real windows defender), turns on and the pc becomes a 2x slower that it should be. I can only see it through task manager. Cpu, ram usage graphs are perfectly normal, but pc is still lagging, You can turn it off through task manager and it will stay off until your next restart and the speed of the pc goes back to normal. I've tried scanning it and stuff like that, but nothing seemed to work. I know it's not a big deal, but still I would like to get rid of all viruses that are inside of my pc, because you never know when they'll harm you really hard. So if anyone have any ideas that might help, I would be really grateful!

Joe Noodles · Jun 20, 2017

Try this>>

If you disable Defender?or it gets automatically disabled when you install a third-party app?it actually uses very few system resources. There?s really not much point in stopping the service. This is particularly true in Windows 10 where you can disable the real-time protection, but still have the added safety of using Defender for manual scanning as a back up to your regular antivirus app.

badday · Jun 20, 2017

I've disabled my Windows Defender, but the problem still persists. The malware just calls itself that way, I dont think it has anything in common with Defender. And btw I'm using windows 7 if that changes anything.

little_pob · Jun 20, 2017

Try MalwareBytes, as well as either TrendMicro's HouseCall or Panda Security's Cloud Cleaner.

If you find you are unable to visit the MalwareBytes site; download it on another computer, and rename the exe file. (I'd recommend scanning in safe mode too.)

If you are unable to run the online scan, at boot open the [F8] Advanced Boot Option menu and select safe mode with networking.

badday · Jun 20, 2017

little_pob said:
Try MalwareBytes, as well as either TrendMicro's HouseCall or Panda Security's Cloud Cleaner.

If you find you are unable to visit the MalwareBytes site; download it on another computer, and rename the exe file. (I'd recommend scanning in safe mode too.)

If you are unable to run the online scan, at boot open the [F8] Advanced Boot Option menu and select safe mode with networking.

Thanks for the tip, will try that tomorrow and see if it works. But I didn't quite understand what exe file should I rename and why? are you talking about MalwareBytes.exe or something similar?

chookey · Jun 20, 2017

In order to protect itself many malware can block you visiting sites or running .exe's which could get rid of it.

badday · Jun 21, 2017

Thanks for the tips guys, I think the problem is gone (or at least looks like it) hope I won't have to deal to anything similar anytime soon.

Josh Ross · Jul 13, 2017

Good to hear that the issues were solved. I have additional advice for future reference. Obviously, It is always beneficial to run anti-virus and anti-malware software, will increase the protection significantly. Being careful with the files and where you browse will also help. Additionally, sometimes scanning in Windows normal mode might not remove the malware. If that happens you can do the following.

Restart your PC in "safe mode with networking"
Use RKill to kill malware processes
Scan with Malwarebytes or Hitmanpro
Restart your PC and do an additional scan

Just something for you to be aware. Let's hope it doesn't happen again. Good luck!

Riker86 · Jul 24, 2017

If you are using Windows 7 then you try using ComboFix in safe mode.
If using Windows 10 then use Rkill and malwarebytes as suggested above.

ketmp · Jul 24, 2017

For win7, I do the following:

Restart your PC in "safe mode with networking" (F8 during BIOS screen)
Use RKill to kill malware processes (don't restart device - this may not like running in safe mode if so dont worry and ignore this step)
Use ComboFix (whilst still in safe mode)
Restart PC
Use ComboFix
Use AdwKiller
Use JunkwareRemoval Tool
Use MalwareBytes anti-malware
Use online ESET antivirus scanner (full scan)

Most of this can be obtained via google (bleeping computer)

alimac · Jul 24, 2017

above works if win 10 bin it lol

Malware slow PC

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