CoreGuard Antivirus 2009 is a rogue anti-spyware program discovered by security researcher S!RI, that uses an interesting trick in order to protect itself. This trick is to uninstall legitimate anti-malware programs when CoreGuard detects they are installed. When CoreGuard Antivirus 2009 starts it will examine the Windows Registry key that contains the list of programs that Windows knows how to uninstall from your computer. If it detects certain programs installed it will display the following message and then start the program's uninstall process:
There is unauthorized antivirus software detected on your computer. It is recommended you to remove it, otherwise it could conflict with CoreGusard <sic> Antivirus 2009.
The anti-malware programs that it detects, and attempts to uninstall include:
- MalwareBytes' Anti-malware
- Norton Internet Security
CoreGuard will also be configured to start whenever you log into Windows. When it runs it will automatically perform a scan of your computer, which will find a variety of infections that it will not let you remove until you purchase the program. These infections, though, are either fake or nonexistent and can be ignored. While running, it will also display numerous alerts and nag screens in order to convince you to purchase the program. Some examples of the alerts you may see are:
User's activity loggers detected!
It's strongly recommended to remove detected threats right now!
Most of the viruses and worms on your PC because of visiting pornosites or warez/torrent sites.
ANTIVIRUS IS RUN IN DEMO MODE. ACTIVATE YOUR ANTIVIRUS OTHERWISE ALL THE DATA WILL BE LOST OR DAMAGED!
DANGEROUS! ANTIVIRUS DETECTED SOME HARMFUL PROGRAMS ON YOUR PC! THEY MAY CORRUPT YOUR INFORMATION OR SEND IT TO HACKERS.
PLEASE, OPTIMIZE YOUR PC. IT RUN ONLY 10%.
These alerts are also disruptive to your normal applications because they will be displayed over your running applications and can't be minimized. The only way to get rid of these alerts is to acknowledge them.
If you find that you are infected with CoreGuard Antivirus 2009, then please
use the remove guide shown below in order to remove it and any associated malware
Self Help Guide
- Print out these instructions as we will need to close every window that
is open later in the fix.
- At this point you should download Malwarebytes Anti-Malware, or MBAM, to scan your computer for any any infections or adware that may be present. Please download Malwarebytes from the following
location and save it to your desktop:
Malwarebytes Anti-Malware Download Link (Download page will open in a new window)
- Once downloaded, close all programs and Windows on your computer, including
- Double-click on the icon on your desktop named mbam-setup.exe.
This will start the installation of MBAM onto your computer.
- When the installation begins, keep following the prompts in order to continue
with the installation process. Do not make any changes to default settings
and when the program has finished installing, make sure you leave Launch
Malwarebytes Anti-Malware checked. Then click on the Finish button. If MalwareBytes prompts you to reboot, please do not do so.
- MBAM will now start and you will be at the main screen as shown below.
Please click on the Scan Now button to start the scan. If there is an update available for Malwarebytes it will automatically download and install it before performing the scan.
- MBAM will now start scanning your computer for malware. This process can
take quite a while, so we suggest you do something else and periodically
check on the status of the scan to see when it is finished.
- When MBAM is finished scanning it will display a screen that displays any malware that it has detected. Please note that the infections found may be different
than what is shown in the image below due to the guide being updated for newer versions of MBAM.
You should now click on the Remove Selected button to remove all the listed malware. MBAM will now delete all of the files and registry keys and add them to the programs quarantine. When removing the files, MBAM may require a reboot in order to remove some of them. If it displays a message stating that it needs to reboot, please allow it to do so. Once your computer has rebooted, and you are logged in, please continue with the rest of the steps.
- You can now exit the MBAM program.
Your computer should now be free of the CoreGuard Antivirus 2009 program. If your current anti-virus solution let this infection through, you may want to consider purchasing the PRO version of Malwarebytes Anti-Malware to protect against these types of threats in the future.