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Win32/Sirefef.R and Win32/Sirefef.AH Removal Guide

The Win32/Sirefef.R and Win32/Sirefef.AH trojan viruses are parts of a very malicious multi-component rootkit family detected as Sirefef, ZeroAccess or ZAccess. Like their former variants both Sirefef.R and Sirefef.AH has the ability to replace drivers, modify the DNS, registry and other crucial settings on your computer. Once the trojans are dropped onto the system, they will create hidden file systems inside the Windows folder and operate completely undetected from traditional security applications. From there Win32/Sirefef.R and Win32/Sirefef.AH will attempt to open "back door" holes in the computer's security and establish stealth connections with remote hacker servers. The hidden ports will then be used to transmit stolen data (like personal information, bank account logins and credit card details) and malicious commands to and from the servers and your computer. In addition, Win32/Sirefef.R and Win32/Sirefef.AH may also use the background Internet connection to quietly download other malware threats that can cause even more damage to the computer. Such malware can disable Windows Firewall and install various rogue security software (ransomware). Other payload components could hijack your web browser and redirect Google search engine traffic to hacked or malicious web pages controlled by criminals.

Win32/Sirefef.R and Win32/Sirefef.AH are severe threats that use advanced encryption techniques to bypass removal. If not resolved in time, the infections may cause irrevocably changes to your system files. Due to the serious consequences associated with these threats we strongly urge you to perform a deep system scan.

 
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Important note: The free diagnostic tool does not include malware removal capabilities. If you wish to remove Win32/Sirefef.R and Win32/Sirefef.AH from your computer, you have to purchase the full registered version.  
 
Harm: High
Removal: Difficult
 

Associated malware detections

Win32/Zwangi.V, Win32/Sirefef.Rby, Sirefef.FB.Gen, Trojan:Win32/Sirefef.GZ, Win32/Sirefef.R, Win32/Sirefef.EV, Win32/Sirefef.AH, Win32/Sirefef.FA, Win32/Sirefef.R, Win32.Sirefef!E2, Win32/Sirefef-APP

Possible symptoms of Win32/Sirefef.R and Win32/Sirefef.AH

  • Warning notifications from installed firewall software
  • Windows gets sluggish and network connection become extremely slow
  • Irritating pop-up ads floods your computer screen
  • Google search results contain links to suspicious sites irrelevant to your criteria
  • Antivirus will not load at start up or let you scan your system
  • Browser home page has been taken over by an unknown website

Win32/Sirefef.R and Win32/Sirefef.AH executable files

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Win32/Sirefef.R and Win32/Sirefef.AH dynamic-link library files

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Additional files related to Win32/Sirefef.R and Win32/Sirefef.AH

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Free Win32/Sirefef.R and Win32/Sirefef.AH Detection
 
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