Trojan.Sirefef.J
Posted: December 7, 2011
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: | 2,309 |
First Seen: | December 7, 2011 |
---|---|
Last Seen: | December 14, 2022 |
OS(es) Affected: | Windows |
Trojan.Sirefef.J (Trojan:WinNT/Sirefef.J) is a rootkit Trojan that prevents affected web users from normal Internet surfing by changing search results in any legal search engine and creating pay-per-click advertising revenue for scammers. Trojan.Sirefef.J downloads updates and additional components and hides existing components on the compromised PC. Trojan.Sirefef.J uses advanced surreptitious techniques in an attempt to avoid detection and removal from the infected computer system. Trojan.Sirefef.J uses certain ports for its peer-to-peer communications.
Aliases
More aliases (773)
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\netbt.sys
File name: netbt.sysSize: 187.9 KB (187904 bytes)
MD5: 3a1802dde25d2e8b95d30bb1dd289422
Detection count: 96
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: February 7, 2013
%WINDIR%\System32\DRIVERS\ipsec.sys
File name: ipsec.sysSize: 75.26 KB (75264 bytes)
MD5: 28be2d6f10205cbe35a1f943f8bcee8d
Detection count: 92
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\DRIVERS
Group: Malware file
Last Updated: January 21, 2013
%WINDIR%\System32\drivers\afd.sys
File name: afd.sysSize: 138.49 KB (138496 bytes)
MD5: eb7a55967f8413b089fb0292ab7f5d82
Detection count: 86
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: December 27, 2012
%WINDIR%\System32\drivers\afd.sys
File name: afd.sysSize: 138.36 KB (138368 bytes)
MD5: 36c7cb7f40cecdff7c5c7491bf126046
Detection count: 80
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: August 6, 2012
%WINDIR%\System32\drivers\netbt.sys
File name: netbt.sysSize: 162.81 KB (162816 bytes)
MD5: ce6d23d96afcdd5251228c93cb05ee92
Detection count: 44
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: August 8, 2012
%WINDIR%\System32\drivers\redbook.sys
File name: redbook.sysSize: 57.6 KB (57600 bytes)
MD5: d7b78bdb3feb1ed447a739ae46216146
Detection count: 32
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: December 3, 2012
%WINDIR%\System32\drivers\dfsc.sys
File name: dfsc.sysSize: 75.26 KB (75264 bytes)
MD5: 6b8fa42242be1454243aebdbf10357f7
Detection count: 32
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: December 18, 2012
%WINDIR%\System32\drivers\afd.sys
File name: afd.sysSize: 270.33 KB (270336 bytes)
MD5: aaa8b13389d8c71cb073c42e054d227c
Detection count: 31
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: September 25, 2012
%WINDIR%\System32\drivers\netbt.sys
File name: netbt.sysSize: 162.81 KB (162816 bytes)
MD5: 8c44bf89c9359c9623bc784281e67aed
Detection count: 30
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: July 20, 2012
%WINDIR%\System32\drivers\netbt.sys
File name: netbt.sysSize: 185.85 KB (185856 bytes)
MD5: 7d65e94df92d2a7b06f25b31337e7bb2
Detection count: 30
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: March 1, 2013
%WINDIR%\System32\drivers\dfsc.sys
File name: dfsc.sysSize: 78.33 KB (78336 bytes)
MD5: de1615aa322de9bbd56f5ac1d33f6a0a
Detection count: 23
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: March 4, 2013
%WINDIR%\System32\DRIVERS\tdx.sys
File name: tdx.sysSize: 71.68 KB (71680 bytes)
MD5: e3beeb00b1aa93fc48ae6af78fc693ff
Detection count: 19
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\DRIVERS
Group: Malware file
Last Updated: December 17, 2012
%WINDIR%\System32\drivers\netbt.sys
File name: netbt.sysSize: 162.81 KB (162816 bytes)
MD5: c8e3e7545e642689bce4aa9452c38d1d
Detection count: 14
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: April 8, 2013
%WINDIR%\System32\drivers\mrxsmb.sys
File name: mrxsmb.sysSize: 451.45 KB (451456 bytes)
MD5: d3e5303de61482ccf10a27bce6ec7a53
Detection count: 14
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: February 6, 2013
%WINDIR%\System32\DRIVERS\netbt.sys
File name: netbt.sysSize: 187.9 KB (187904 bytes)
MD5: c4acc41f8f5f2a3bd8fdfe0fc5f18791
Detection count: 12
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\DRIVERS
Group: Malware file
Last Updated: August 30, 2012
%WINDIR%\System32\drivers\ipsec.sys
File name: ipsec.sysSize: 75.26 KB (75264 bytes)
MD5: 3bd30a66a9bd086fa8966c18409725d9
Detection count: 12
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: August 13, 2012
%WINDIR%\System32\drivers\netbt.sys
File name: netbt.sysSize: 185.85 KB (185856 bytes)
MD5: f82482009bc43f93fdfdfb5a6ed9a28d
Detection count: 7
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: May 15, 2013
%WINDIR%\System32\DRIVERS\serial.sys
File name: serial.sysSize: 64.51 KB (64512 bytes)
MD5: 91db9c3d5cabf92f2442cb58b730ed55
Detection count: 7
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\DRIVERS
Group: Malware file
Last Updated: March 4, 2013
%WINDIR%\System32\drivers\dfsc.sys
File name: dfsc.sysSize: 78.33 KB (78336 bytes)
MD5: 440769d37646aa9fe6870e827e06a828
Detection count: 5
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: August 1, 2012
%WINDIR%\System32\drivers\csc.sys
File name: csc.sysSize: 387.58 KB (387584 bytes)
MD5: 718799c91ef914ed0282a936542f7c06
Detection count: 5
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: April 2, 2013
%WINDIR%\System32\drivers\netbt.sys
File name: netbt.sysSize: 187.9 KB (187904 bytes)
MD5: 9a4e0de62fdc4c1953226e43eca1792d
Detection count: 5
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: July 30, 2012
%WINDIR%\System32\drivers\netbt.sys
File name: netbt.sysSize: 162.81 KB (162816 bytes)
MD5: 40e65c560013869f14eceb904f15390d
Detection count: 5
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: March 12, 2013
%WINDIR%\System32\DRIVERS\ipsec.sys
File name: ipsec.sysSize: 74.75 KB (74752 bytes)
MD5: cbfdb9baf82f84b1a555bfa559dea745
Detection count: 5
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\DRIVERS
Group: Malware file
Last Updated: April 2, 2013
%WINDIR%\System32\drivers\dfsc.sys
File name: dfsc.sysSize: 78.33 KB (78336 bytes)
MD5: 4163e068f8ce38d7a43d145611da6d13
Detection count: 1
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: November 26, 2012
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