Remove "CACHEOPTIMIZER" virus (Removal Guide)

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What is Cacheoptimizer?

Cacheoptimizer might be harmful to your computer!

Cacheoptimizer attacks Apple Mac OSX computers, Android phones/pads/Chromebooks and Windows PCs.

The CACHEOPTIMIZER risk level is Medium

Threat Summary:

Threat Name:
Cacheoptimizer
Classification:
PUP - Potentially Unwanted Program
PUP program is not a virus. PUP software can cause your computer to run slowly, display unpredictable ads, or install other software without your knowledge.
Symptoms:
Presence of unknown downloaded files and programs installed without your consent;
Slowing down computer performance;
Displaying fake alarms about your device's health and require payment for fixing fake issues;
Popup ads;
Installing or removing software without your permission, or consent;
Showing confusing or misleading prompts preventing its uninstallation.
Distribution:
Cracked software;
Potentially unwanted applications;
Freeware Sites;
Free games from an unknown producer.
Damage:
Causes the computer to run slowly;
Have to pay money to purchase useless applications;
Privacy issues: collects information about computer usage;
Downloads malware programs.
Or remove the virus without installing third-party software.

It is only for power users!

Remove the virus using UnHackMe - Ultimate Malware Killer

UnHackMe Boxshot
UnHackMe was created in 2005 to remove rootkits - invisible/stealth viruses.
Now, it removes all types of malicious software.

The program is entirely free for 30 days (including the support).

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Download and Install UnHackMe

  1. Download UnHackMe from the official website.

    Download UnHackMe

  2. Double-click on UnHackMe.zip.
    Unzip all files from the zip to a new folder.
  3. Double-click on the 'unhackme_setup.exe.'

  4. You will see a confirmation screen with the verified publisher: Greatis Software.
    Choose 'Yes'.
  5. Then, you have to accept the license agreement.

  6. Complete installation.

    7. Complete UnHackMe installation.

Scan for CACHEOPTIMIZER malware using UnHackMe

The first scan will start automatically.

Remove CACHEOPTIMIZER malware

  1. Carefully inspect found items.
    A red shield marks malicious items.
    Suspicious items are yellow.

    UnHackMe automatically creates a System Restore point before fixing!
    It is essential to have System Restore active to recover deleted files.

    Next, click the red button: Remove Checked!

  2. UnHackMe may ask for your confirmation to close all browsers.

    Do it!

  3. If you want to quarantine files before deleting, check the box 'Use file safe deleting.'

  4. And after all, you will see the results of your scanning and fixing process:

  5. Restart your computer to complete the removal process.
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Confirm that the computer is virus-free with the UnHackMe support team

  1. Open UnHackMe.
  2. Click the "Help in Removal" button on the main screen.
  3. Choose "Send us RegRunLog."
  4. Enter your e-mail, name, or nick.
  5. Describe your problem.
  6. Accept the Privacy Policy.
  7. Click the "Upload" button.
    You will receive the solution by e-mail within 24 hours.
If you have any trouble with it, you can manually attach "regrunlog.txt" from your desktop and send it to us using the Support Center.

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Remove the virus using Malwarebytes Antimalware:

  1. Download Malwarebytes for Windows. Download Malwarebytes
  2. Double-click on the Malwarebytes setup file MBSetup.

    Accept the User Account Control question.

  3. Follow the on-screen instructions to complete the Malwarebytes installation.
  4. Click on the Scan button.

    Wait for the Malwarebytes scan to complete.

  5. Click on the Quarantine button to remove the malware found.
  6. Necessary: restart the computer to complete the removal.

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How to remove CACHEOPTIMIZER virus manually?

  1. Check recently installed apps and uninstall unknown apps.
    2. Uninstall Unwanted Apps
    More info...
  2. Disable Web Push Notifications in your browser.
    3. How to Manage Notifications in Your Browsers
    More info...
  3. Open Task Manager and close all unused programs.
    Use the Details tab in the Task Manager.
    Customize columns to display the "Command line".
    Virus programs often use random filenames.
    4. Close Malware Processes using Task Manager
    More info...
  4. Delete virus scheduled tasks.
    5. Remove malicious scheduled tasks
    More info...
  5. Find and delete all keys with virus name in it's content.
    6. run registry editor to find
    More info...
  6. After that, check the shortcuts of your browsers on having additional addresses at the end of the command line. Check if shortcuts run the actual browser and not the fake ones. Remember: Chromium is a fake browser, the real name has to be Chrome.
    7. check shortcut's end for additional line
  7. Stop and disable unknown services. Be careful! Do it only if you are fully sure that you do!
    8. Stop and Disable Malware Services
    More info...
  8. Remove all unused extensions (or plug-ins) in your browsers. If it does not help, you need totally reset your browser.
    9. check plugins
    More info...
  9. After that, check the search settings and homepage of your browser. Reset them if needed.
    10. Set Chrome Search Engine and Homepage
  10. Next, you have to check your DNS settings. Follow your provider's instructions, delete all unknown DNS addresses.
    More info...
  11. And at the end, clear your recycle bin, temporary files, browser's cache.
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Remove the virus from Android Core

Remove Suspicious Applications

  1. Open Settings.
  2. Go to the App Management.
  3. Tap Auto-launch apps.
  4. Uncheck all suspicious apps.
  5. Get back to the App List.
  6. Tap on the application name.
  7. Tap Uninstall.

Activate Google Play Protect

  1. Open Settings.
  2. Tap Security.
  3. Choose Google Play Protect.
  4. Activate Google Play Protection.

Clear your cache and downloads

  1. Open Settings.
  2. Go to the Apps List.
  3. Locate the Chrome.
  4. Tap Storage usage.
  5. Tap Clear Cache and Clear Data.

Restart your Android phone in the Safe Mode

if the Safe Mode is available.

  1. Press and hold the Power button.
  2. Choose the Safe Mode option.
  3. Restart your phone.
You will see the Safe Mode text in the corner of your screen after reboot.

If nothing helps, reset your phone

  1. Open Settings.
  2. Tap Additional Settings.
  3. Choose Backup and Reset. You can use the search to find Reset.
  4. Choose Erase all data (factory reset) and then tap Erase all data.
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Remove the virus using Malwarebytes for Android

  1. Download Malwarebytes for Android.
    Download Malwarebytes
  2. Install Malwarebytes for Android on your phone.
  3. Open Malwarebytes for Android.
  4. Tap the Give Permissions button to set the permissions required for the scan.
  5. Toggle on Allow access to all files to allow Malwarebytes to access your files and folders.
  6. Tap Run a scan.
  7. Tap on Remove Selected to fix the threats.
  8. Restart your phone.
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Remove the CACHEOPTIMIZER virus from Mac OSX

STEP1: End Virus-related Processes

  1. Use the Launchpad to open the Activity Monitor application.
  2. Locate the suspicious apps in the list.
  3. Close the processes using the [x] button.

STEP2: Remove Unwanted Login Items

  1. Go to the Mac System Preferences.
  2. Click the Users & Groups.
  3. Select your profile on the user's list, then choose the Login Items tab.
  4. Use the [-] button to remove the apps from Mac startup.

STEP3: Remove Unwanted Applications

  1. Open the Finder application.
  2. Choose the Applications folder.
  3. Select unwanted applications.
  4. Right-click on it and click Move to Trash in the popup menu.

STEP4: Remove Auto-Launch Daemons and Agents:

  1. Open the Finder application.
  2. Open in the menu Go, Go to Folder...
  3. Copy and paste: Library/LaunchAgents.
  4. Press the Enter key.
  5. Remove unwanted launch agents by dragging them to the Trash.

Repeat the same procedure for All User Launch Agents.

Go to the folder: ~/Library/LaunchAgents/ if it exists.

Repeat the same procedure for Launch Daemons.

Go to the folder: /Library/LaunchDaemons/ if it exists.

STEP5: Empty the trash bin and reboot your Mac

  1. Click on the Trash icon in the Dock and choose Empty Trash.
  2. Go to the Mac main menu and click Restart.
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Remove the virus using Malwarebytes Antimalware

  1. Download Malwarebytes for Mac Download Malwarebytes
  2. Double-click on the Malwarebytes setup file Malwarebytes-MacXXX.pkg.
  3. Follow the on-screen instructions to complete the Malwarebytes installation.
  4. Click on the Scan button.

    Wait for the Malwarebytes scan to complete.

  5. Click on the Quarantine button to remove the found malware.
  6. Important: restart the computer to complete the removal.
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