Threat Scorecard

Threat Level: 100 % (High)
Infected Computers: 39
First Seen: July 24, 2009
Last Seen: January 23, 2022
OS(es) Affected: Windows

AntivirusBEST Image

AntivirusBEST (also known as Antivirus BEST or Antivirus-BEST) is a rogue anti-spyware program that cames from the FakeXPA family. Typically, AntivirusBEST may either penetrate the host computer through security exploits, or it is known to be downloadable on its website (, which you may be diverted to due to browser hijacking. The distributers of AntivirusBEST use a BHO that infects a user's computer to display fake warning messages which can be easily confused as warning messages delivered by the Windows system.

The following bogus warning messages are issued to lead you to buy the AntivirusBEST program:

"Internet Explorer has found an unregistered version of AntivirusBEST. To protect your computer, please register your AntivirusBEST." and

Privacy Violation alert!
AntivirusBEST detected a Privacy Violation. A program is secretly sending your private data to an untrusted internet host. click here to block this activity by removing the threat (Recommended)."

However, this fake anti-spyware becomes installed on your machine, AntivirusBEST will begin to issue false system scans that detect various fictitious parasite threats, all in order to scare you into buying the licensed version of AntivirusBEST.

AntivirusBEST is a clone of numerous other fraudulent security programs that include Antivirus 360, Nortel Antivirus, Alpha Antivirus, Anti-virus Professional, Antivirus 2010, Cyber Security, MaCatte Antivirus 2009, Eco Antivirus, Antivir, Personal Security, Ghost Antivirus, Antivirus 7, Antivirus GT, Earth Antivirus, Antivirus 8, AVG Antivirus 2011, E-Set Antivirus 2011, XP Antivirus 2013.


15 security vendors flagged this file as malicious.

Anti-Virus Software Detection
NOD32 Win32/Adware.AntivirusBest
McAfee-GW-Edition Trojan.Fakealert.afe
McAfee+Artemis potentially unwanted program Artemis!11D33A920CB8
Kaspersky not-a-virus:FraudTool.Win32.AntivirusBest.a
Ikarus not-a-virus:FraudTool.Win32.AntivirusBest
Fortinet Misc/AntivirusBest
F-Secure FraudTool.Win32.AntivirusBest.a
AVG Downloader.Zlob.ANKJ
Avast Win32:Adware-gen
Authentium W32/FakeAV.LQ
AntiVir TR/Fakealert.afe
AhnLab-V3 Win-Trojan/Fakealert.11345408
a-squared Riskware.FraudTool.Win32.AntivirusBest!IK

SpyHunter Detects & Remove AntivirusBEST

File System Details

AntivirusBEST may create the following file(s):
# File Name MD5 Detections
1. PreInstaller.exe eba5ca538be5b69f59f4de9ae8a21f5f 13
2. ABEST.exe f559a1ac02e5cc652d1d722cf89d7d5a 4
3. svchost.exe 8b80f30727e069352a2d209684da4c44 0
4. QWProtect.dll 5be590be656ad54849cd396c27724845 0
5. Installer.exe 3908ef46a1bd48b2851229455dd8add2 0
6. abest.exe 11d33a920cb849192e2cc345a6a130dc 0


The following messages associated with AntivirusBEST were found:

Internal conflict alert.
AntivirusBEST detected internal software conflict. Some application tries to get access to system kernel (such behavior is typical to Spyware/Malware). It may cause crash of your computer.
Privacy Violation alert!
AntivirusBEST detected a Privacy Violation. A program is
secretly sending your private data to an untrusted internet
host. click here to block this activity by removing the threat
System files modification alert!
Some critical system files of your computer were modified by malicious program. It may cause system instability and data loss. Click here to block unathorised modifications by removing threats (Recommended).
Your PC is not protected
Security center reports that 'AntivirusBEST' is inactive. Antivirus software helps to protect your computer against viruses and other security threats. Click here for the suggested actions. You system might be at risk now.

1 Comment

I had trouble antivirusbest for the past week. i could not remove it or stop those popups. I purchased 1 other program and wasted my money. I am glad that you provide a decent program for detecting such a nasty parasite. Thanks a bunch!


Most Viewed