Home Malware Programs Trojans Dropper.Sirefef.B

Dropper.Sirefef.B

Posted: June 1, 2011

Threat Metric

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)

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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.sys
Size: 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.sys
Size: 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
%WINDIR%\System32\drivers\intelppm.sys File name: intelppm.sys
Size: 40.57 KB (40576 bytes)
MD5: bdabf632d4d5a7db758039d23fa66739
Detection count: 92
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: January 24, 2012
%WINDIR%\System32\drivers\i8042prt.sys File name: i8042prt.sys
Size: 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\netbios.sys File name: netbios.sys
Size: 36.35 KB (36352 bytes)
MD5: d97bc69e3f6ee25770776ae7a55b1efe
Detection count: 83
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: April 4, 2012
%WINDIR%\System32\drivers\ipsec.sys File name: ipsec.sys
Size: 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
%WINDIR%\System32\drivers\csc.sys File name: csc.sys
Size: 387.58 KB (387584 bytes)
MD5: 4fb3383bb73a079fc9b5483900c5aea2
Detection count: 75
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: June 15, 2012
%WINDIR%\System32\drivers\avgtdix.sys File name: avgtdix.sys
Size: 297.16 KB (297168 bytes)
MD5: f2bd6d1d9330ae3196e18dbfd6640633
Detection count: 65
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: February 13, 2012
%LOCALAPPDATA%\57e03721\X File name: X
Size: 54.78 KB (54784 bytes)
MD5: 6274ce4b85ca8a51cf1763f9a762b450
Detection count: 53
Path: %LOCALAPPDATA%\57e03721
Group: Malware file
Last Updated: December 20, 2012
%USERPROFILE%\Local Settings\Application Data\shkzt.exe File name: shkzt.exe
Size: 328.7 KB (328704 bytes)
MD5: 398fc21b67ef5aac154354c940a43a4a
Detection count: 50
File type: Executable File
Mime Type: unknown/exe
Path: %USERPROFILE%\Local Settings\Application Data
Group: Malware file
Last Updated: January 23, 2012
%WINDIR%\System32\drivers\dfsc.sys File name: dfsc.sys
Size: 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%\WMSPoa.dll File name: WMSPoa.dll
Size: 122.88 KB (122880 bytes)
MD5: bcf92337f3a8960060d1b00d635f6b21
Detection count: 36
File type: Dynamic link library
Mime Type: unknown/dll
Path: %WINDIR%
Group: Malware file
Last Updated: June 18, 2011
%WINDIR%\System32\DRIVERS\tdx.sys File name: tdx.sys
Size: 74.24 KB (74240 bytes)
MD5: 7352c61e97302a071a1145db96281963
Detection count: 16
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\DRIVERS
Group: Malware file
Last Updated: January 28, 2013
%USERPROFILE%\Skrivebord\Play_Video_Click_Run.exe File name: Play_Video_Click_Run.exe
Size: 154.11 KB (154112 bytes)
MD5: 770a9f438a7829cd8071556aaf4148e6
Detection count: 12
File type: Executable File
Mime Type: unknown/exe
Path: %USERPROFILE%\Skrivebord
Group: Malware file
Last Updated: March 21, 2012
%USERPROFILE%\Application Data\3cp4PQ86B.exe File name: 3cp4PQ86B.exe
Size: 396.28 KB (396288 bytes)
MD5: 73fb4d1e6d5b6f5100d9a2de3c1c535a
Detection count: 11
File type: Executable File
Mime Type: unknown/exe
Path: %USERPROFILE%\Application Data
Group: Malware file
Last Updated: January 10, 2012
%WINDIR%\System32\drivers\imapi.sys File name: imapi.sys
Size: 41.85 KB (41856 bytes)
MD5: d0fb6518a568d72838e70466a5e78949
Detection count: 10
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: December 7, 2011
%WINDIR%\System32\drivers\ndiswan.sys File name: ndiswan.sys
Size: 91.52 KB (91520 bytes)
MD5: 1d6102db7fed8d7da789d3bfcc78d28d
Detection count: 7
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: August 22, 2011
%WINDIR%\System32\drivers\update.sys File name: update.sys
Size: 364.16 KB (364160 bytes)
MD5: 5533dc682c57dfe99d3d749a15be9788
Detection count: 7
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: September 26, 2011
%WINDIR%\System32\drivers\mrxsmb.sys File name: mrxsmb.sys
Size: 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\sdbus.sys File name: sdbus.sys
Size: 79.23 KB (79232 bytes)
MD5: 2e6145d70e16592b27a7a0a7afc09a4e
Detection count: 5
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: July 25, 2011
%USERPROFILE%\Application Data\L8O75Vm1.exe File name: L8O75Vm1.exe
Size: 428.03 KB (428032 bytes)
MD5: 514dacd90d105db4c3ff9889c290eabd
Detection count: 5
File type: Executable File
Mime Type: unknown/exe
Path: %USERPROFILE%\Application Data
Group: Malware file
Last Updated: January 13, 2012
%WINDIR%\System32\drivers\smb.sys File name: smb.sys
Size: 66.56 KB (66560 bytes)
MD5: ed23daaaccaf6f7efcfaf0cc155873e8
Detection count: 5
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: February 20, 2012

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