Dropper.Sirefef.B
Posted: June 1, 2011
Threat Metric
The Threat Meter is a malware assessment that SpywareRemove.com's research team is able to
give every identifiable malware threat. Our Threat Meter includes several criteria based off of
specific malware threats to value their severity, reach and volume. The Threat Meter is able to give
you a numerical breakdown of each threat's initial Threat Level, Detection Count, Volume Count,
Trend Path and Percentage Impact. The overall ranking of each threat in the Threat Meter is a basic
breakdown of how all threats are ranked within our own extensive malware database. The scoring for
each specific malware threat can be easily compared to other emerging threats to draw a contrast in
its particular severity. The Threat Meter is a useful tool in the endeavor of seeking a solution to
remove a threat or pursue additional analytical research for all types of computer users.
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.
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: | 7,481 |
First Seen: | June 1, 2011 |
---|---|
Last Seen: | January 20, 2022 |
OS(es) Affected: | Windows |
Aliases
TR/Drop.Sirefef.B.413 [AntiVir]Artemis!452EA76E0191 [McAfee]Artemis!4C4ABC0F73C6 [McAfee]Rootkit.Win32.SuspectCRC.Win32.SuspectCRC.Sirefef. [Ikarus]Generic Dropper!1gl [McAfee-GW-Edition]TR/Sirefef.IM [AntiVir]TR/Drop.Sirefef.B.196 [AntiVir]Gen:Variant.Barys.368 [BitDefender]a variant of Win32/Rootkit.Kryptik.KL [NOD32]Trojan-FAFL!CAA554890A03 [McAfee]Generic27.ADJM [AVG]TR/Drop.Sirefef.B.710 [AntiVir]TrojWare.Win32.Rootkit.ZAccess.CV [Comodo]Gen:Variant.Kazy.58868 [BitDefender]Trojan.Win32.Yakes.qcm [Kaspersky]
More aliases (2222)
More aliases (2222)
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: 185.85 KB (185856 bytes)
MD5: e42c5ccb01fd4184ea07c7becbc44134
Detection count: 326
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: June 17, 2016
%WINDIR%\System32\drivers\netbt.sys
File name: netbt.sysSize: 162.81 KB (162816 bytes)
MD5: 03e71c5d6a62ea6a4fbbaba3f4c06d4a
Detection count: 286
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: June 17, 2016
%WINDIR%\System32\drivers\redbook.sys
File name: redbook.sysSize: 58.24 KB (58240 bytes)
MD5: f07f430836829ccdcade1b74afdfe056
Detection count: 95
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: February 22, 2013
%LOCALAPPDATA%\9c2e62ce\X
File name: XSize: 54.27 KB (54272 bytes)
MD5: 44c4a66a69e1b2b8531724c2cdfe2ae1
Detection count: 91
Path: %LOCALAPPDATA%\9c2e62ce
Group: Malware file
Last Updated: October 18, 2012
%WINDIR%\System32\drivers\i8042prt.sys
File name: i8042prt.sysSize: 54.78 KB (54784 bytes)
MD5: 7c877c89a98395ce6ad87477c646e80f
Detection count: 91
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: October 24, 2012
%WINDIR%\System32\drivers\redbook.sys
File name: redbook.sysSize: 57.6 KB (57600 bytes)
MD5: a88158f0ac39bc0aea034db303cc40d6
Detection count: 90
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: November 26, 2012
%USERPROFILE%\Configuraci?n local\Datos de programa\6de5bb83\X
File name: XSize: 54.27 KB (54272 bytes)
MD5: dbceb3bbedd13fb083765c4d4c289247
Detection count: 87
Path: %USERPROFILE%\Configuraci?n local\Datos de programa\6de5bb83
Group: Malware file
Last Updated: January 5, 2013
%WINDIR%\System32\drivers\serial.sys
File name: serial.sysSize: 83.45 KB (83456 bytes)
MD5: 48c6521196eccdf740d085ad6fc51bf6
Detection count: 86
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: October 5, 2012
%WINDIR%\System32\drivers\ipsec.sys
File name: ipsec.sysSize: 75.26 KB (75264 bytes)
MD5: f7e34abf063093749732b8340904ebd1
Detection count: 81
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: September 10, 2012
%LOCALAPPDATA%\b116d70e\X
File name: XSize: 54.78 KB (54784 bytes)
MD5: 96351fb232c11b76fdd7e81b95728037
Detection count: 61
Path: %LOCALAPPDATA%\b116d70e
Group: Malware file
Last Updated: January 21, 2013
%LOCALAPPDATA%\57e03721\X
File name: XSize: 54.78 KB (54784 bytes)
MD5: 6274ce4b85ca8a51cf1763f9a762b450
Detection count: 53
Path: %LOCALAPPDATA%\57e03721
Group: Malware file
Last Updated: December 20, 2012
%WINDIR%\System32\drivers\dfsc.sys
File name: dfsc.sysSize: 75.26 KB (75264 bytes)
MD5: 60b426e8ec759ac68a25f2f8c9bc3d0e
Detection count: 44
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: April 10, 2013
%WINDIR%\System32\drivers\netbt.sys
File name: netbt.sysSize: 162.81 KB (162816 bytes)
MD5: b805fd1449d0638787b5ac8f4ff2c6da
Detection count: 35
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: July 20, 2012
%LOCALAPPDATA%\e14742ef\X
File name: XSize: 53.76 KB (53760 bytes)
MD5: 24cc17350d07a242c97df1cab0988a3d
Detection count: 26
Path: %LOCALAPPDATA%\e14742ef
Group: Malware file
Last Updated: March 12, 2013
%WINDIR%\System32\drivers\dfsc.sys
File name: dfsc.sysSize: 75.26 KB (75264 bytes)
MD5: 048d6fec8033b3c0ed624693ec9ada2b
Detection count: 26
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: April 2, 2013
%USERPROFILE%\Configuraci?n local\Datos de programa\1ae4e484\X
File name: XSize: 55.8 KB (55808 bytes)
MD5: aa7384274ab0807565d0713b8782305b
Detection count: 16
Path: %USERPROFILE%\Configuraci?n local\Datos de programa\1ae4e484
Group: Malware file
Last Updated: November 19, 2012
%LOCALAPPDATA%\9756cbb2\X
File name: XSize: 54.78 KB (54784 bytes)
MD5: 56084d735a0ca7da9e6f2b4ebd4ecd8d
Detection count: 12
Path: %LOCALAPPDATA%\9756cbb2
Group: Malware file
Last Updated: July 23, 2012
%LOCALAPPDATA%\3468af57\X
File name: XSize: 54.27 KB (54272 bytes)
MD5: 75b17c3a2e7f0f746d59eca0db4163e7
Detection count: 9
Path: %LOCALAPPDATA%\3468af57
Group: Malware file
Last Updated: January 21, 2013
%WINDIR%\system32\drivers\cdrom.sys
File name: cdrom.sysSize: 108.54 KB (108544 bytes)
MD5: 11c061f3f301577d7949b2a85ec830cd
Detection count: 7
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\system32\drivers
Group: Malware file
Last Updated: August 21, 2012
%WINDIR%\System32\drivers\dfsc.sys
File name: dfsc.sysSize: 75.26 KB (75264 bytes)
MD5: a8f9797d685d48048d2afa7d28de08ab
Detection count: 7
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: November 2, 2012
%WINDIR%\System32\drivers\mrxsmb.sys
File name: mrxsmb.sysSize: 456.32 KB (456320 bytes)
MD5: 5a52ec4c22a8e9065bf5080432899801
Detection count: 7
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: November 12, 2012
%WINDIR%\System32\drivers\dfsc.sys
File name: dfsc.sysSize: 78.33 KB (78336 bytes)
MD5: caa554890a0340afa73cee4516d68fb9
Detection count: 5
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: April 8, 2013
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