Trojan.Sirefef.N
Posted: August 6, 2012
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 |
---|---|
Infected PCs: | 131 |
First Seen: | August 6, 2012 |
---|---|
OS(es) Affected: | Windows |
Trojan.Sirefef.N (Trojan:WinNT/Sirefef.N) is a rootkit Trojan that restricts attacked web users from normal Internet surfing by modifying search results and using the pay-per-click technique to earn money for cybercriminals. Trojan.Sirefef.N downloads updates and additional components and disguises existing components on the infected computer. Trojan.Sirefef.N uses advanced stealthy techniques in an attempt to evade detection and removal from the affected computer. Trojan.Sirefef.N uses particular ports for its peer-to-peer communications.
Aliases
More aliases (104)
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\dfsc.sys
File name: dfsc.sysSize: 78.33 KB (78336 bytes)
MD5: 6d793d536e1e9aa2dc8a007c75f816ba
Detection count: 94
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: January 28, 2013
%WINDIR%\System32\drivers\dfsc.sys
File name: dfsc.sysSize: 78.33 KB (78336 bytes)
MD5: f7c8492e9b274d828602bcee2c5e104d
Detection count: 54
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: October 12, 2012
%WINDIR%\System32\drivers\i8042prt.sys
File name: i8042prt.sysSize: 54.78 KB (54784 bytes)
MD5: bcfb33878017e5815c5d34d8a194ad6a
Detection count: 51
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: February 22, 2013
%WINDIR%\System32\drivers\redbook.sys
File name: redbook.sysSize: 57.6 KB (57600 bytes)
MD5: 9a3cc780983d12c5a834f681a590380f
Detection count: 42
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: January 16, 2013
%WINDIR%\System32\drivers\tdx.sys
File name: tdx.sysSize: 74.75 KB (74752 bytes)
MD5: d98425a0e63dcecb70eabd1286b0a5f1
Detection count: 37
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: January 21, 2013
%WINDIR%\System32\drivers\cdrom.sys
File name: cdrom.sysSize: 67.07 KB (67072 bytes)
MD5: 42d6792546bd9bad3214e516a5390fa3
Detection count: 26
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: December 18, 2012
%WINDIR%\System32\drivers\tdx.sys
File name: tdx.sysSize: 72.19 KB (72192 bytes)
MD5: 74b2764208c3863ac1cc3d83c1dffe92
Detection count: 19
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: October 5, 2012
%WINDIR%\System32\drivers\cdrom.sys
File name: cdrom.sysSize: 108.54 KB (108544 bytes)
MD5: b05c0e30bb3d99afa06283a14453bc23
Detection count: 19
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: May 8, 2013
%WINDIR%\System32\drivers\dfsc.sys
File name: dfsc.sysSize: 78.33 KB (78336 bytes)
MD5: 236deb9e136f1aa2ba7a178deb50b312
Detection count: 10
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: May 8, 2013
%WINDIR%\System32\drivers\netbt.sys
File name: netbt.sysSize: 185.85 KB (185856 bytes)
MD5: be8707fce53130deaa464b57c89f22b0
Detection count: 9
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: October 5, 2012
%WINDIR%\System32\drivers\serial.sys
File name: serial.sysSize: 64.51 KB (64512 bytes)
MD5: 081f95c2166032649605766d8d0877bf
Detection count: 5
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: August 6, 2012
%WINDIR%\System32\drivers\MpFilter.sys
File name: MpFilter.sysSize: 165.64 KB (165648 bytes)
MD5: cd75729b706466010cd6cbdd7d99ea86
Detection count: 5
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: August 6, 2012
%WINDIR%\System32\drivers\dfsc.sys
File name: dfsc.sysSize: 75.26 KB (75264 bytes)
MD5: 09eeeed37495fca783998a43084e5764
Detection count: 5
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: December 20, 2012
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