Trojan:Win64/Sirefef.AF
Posted: January 16, 2013
Threat Metric
The following fields listed on the Threat Meter containing a specific value, are explained in detail below:
Threat Level: The threat level scale goes from 1 to 10 where 10 is the highest level of severity and 1 is the lowest level of severity. Each specific level is relative to the threat's consistent assessed behaviors collected from SpyHunter's risk assessment model.
Detection Count: The collective number of confirmed and suspected cases of a particular malware threat. The detection count is calculated from infected PCs retrieved from diagnostic and scan log reports generated by SpyHunter.
Volume Count: Similar to the detection count, the Volume Count is specifically based on the number of confirmed and suspected threats infecting systems on a daily basis. High volume counts usually represent a popular threat but may or may not have infected a large number of systems. High detection count threats could lay dormant and have a low volume count. Criteria for Volume Count is relative to a daily detection count.
Trend Path: The Trend Path, utilizing an up arrow, down arrow or equal symbol, represents the level of recent movement of a particular threat. Up arrows represent an increase, down arrows represent a decline and the equal symbol represent no change to a threat's recent movement.
% Impact (Last 7 Days): This demonstrates a 7-day period change in the frequency of a malware threat infecting PCs. The percentage impact correlates directly to the current Trend Path to determine a rise or decline in the percentage.
Threat Level: | 8/10 |
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Infected PCs: | 7 |
First Seen: | January 16, 2013 |
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OS(es) Affected: | Windows |
Trojan:Win64/sirefef.AF is a rootkit Trojan that opens a backdoor on the targeted PC and downloads and installs another security threats onto the infected computer system. Trojan:Win64/Sirefef.AF spreads via malicious links, file-sharing networks, and spam email attachments, and invades the victimized computer system without a PC user's permission and knolwdge. Once installed on the corrupted machine, Trojan:Win64/Sirefef.AF slows down the targeted computer and makes it unstable. Trojan:Win64/Sirefef.AF compromises the affected computer and violates privacy. Trojan:Win64/Sirefef.AF will also hijack the web browser and cause annoying redirects to suspicious websites. Trojan:Win64/Sirefef.AF is difficult to detect and uninstall from the infected computer by many security applications.
Aliases
More aliases (31)
Technical Details
File System Modifications
Tutorials: If you wish to learn how to remove malware components manually, you can read the tutorials on how to find malware, kill unwanted processes, remove malicious DLLs and delete other harmful files. Always be sure to back up your PC before making any changes.
The following files were created in the system:%WINDIR%\System32\drivers\mrxsmb.sys
File name: mrxsmb.sysSize: 456.32 KB (456320 bytes)
MD5: 69a23ed79d3167e8331179b497b0cf76
Detection count: 18
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: January 16, 2013
%WINDIR%\System32\drivers\smb.sys
File name: smb.sysSize: 66.56 KB (66560 bytes)
MD5: 2cdd68758baaafb9a738dff177e374b8
Detection count: 5
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: February 11, 2013
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