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Trojan:Win32/Sirefef

First posted on 01 August 2012.
Source: Microsoft

Aliases :

There are no other names known for Trojan:Win32/Sirefef.

Explanation :

Trojan:Win32/Sirefef is a member of the multi-component malware family Win32/Sirefef.

Win32/Sirefef is a multi-component family of malware that uses stealth to hide its presence on an affected computer. Due to the nature of this threat, the payload may vary greatly from one infection to another, although common behavior includes:

• Downloading and executing of arbitrary files
• Contacting remote hosts
• Disabling of security features

Often, components that are stored in a hidden folder are detected as Trojan:Win32/Sirefef. They may use a file name in the following format:

<hexnum>.$

where <hexnum> is an eight digit hex number, for example, 00000001.@ and 000000cb.@.

The presence of Trojan:Win32/Sirefef indicates that your computer has been infected by Win32/Sirefef. For more information on this threat family, see the description for Win32/Sirefef elsewhere in the encyclopedia.



Analysis by Chun Feng

Last update 01 August 2012

 

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