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Feb 1, 2012

Risk Level 1: Very Low

Trojan.Zeroaccess is a Trojan horse that uses an advanced rootkit to hide itself. It can also create a hidden file system, downloads more malware, and opens a back door on the compromised computer.

The threat Trojan.Zeroaccess was discovered by Symantec Security Response Threat Severity Assessment on July 13, 2011 and was classified as Trojan.

Initial Daily Certified version of virus definitions for Norton security products was released on July 13, 2011 revision 024. It should be noted that users with the older versions of Norton Internet Security are limited to Daily LiveUpdate definitions. For more information, go to the page where the are described virus definitions available for Norton products.

Trojan.Zeroaccess Threat Assessment
Wild LevelLow
Number of Infections0 - 49
Number of Sites0 - 2
Geographical DistributionLow
Threat ContainmentEasy
Damage LevelMedium
Distribution LevelLow

According to the Symantec Threat Severity Assessment, overall risk of Trojan.Zeroaccess is now categorized as «Very Low» — poses little threat to users; rarely even makes headlines; no reports in the wild. Read more about Threat Severity Assessment.

This threat affect the following operating systems:
  • Windows 98
  • Windows 95
  • Windows XP
  • Windows Me
  • Windows Vista
  • Windows NT
  • Windows Server 2003
  • Windows 2000

More information about Trojan.Zeroaccess, you can find on the official site of Symantec Corporation, where in addition to useful information you can find technical details and removal instructions:

It is also recommended to read the article Network security threats, where you can find a brief description and explanation of the most dangerous security threats plus a few simple tips on how to protect your personal computer from them.

2 comments: (+add yours?)

» Helen said...

Thanks for information. I want to delete this virus, but I do not know how to make it. May be you can help me to avoid this type of problem another time.

» Admin said...

Hi Helen. Given that this is an unofficial blog, I suggest you visit Norton Support and Norton Community for qualified help.

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