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DefaultTab-Search Results

Posted: March 4, 2013

Threat Metric

Ranking: 2,913
Threat Level: 5/10
Infected PCs: 399,323
First Seen: March 4, 2013
Last Seen: October 15, 2023
OS(es) Affected: Windows

Aliases

Generic5.AXOX [AVG]ApplicUnwnt [Comodo]Searchres.2F5 [AVG]Artemis!E8BC5FD5F80C [McAfee]Adware.Toolbar.239 [DrWeb]Artemis!5F593CAC9F67 [McAfee]

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:



C:\Users\<username>\AppData\Roaming\DefaultTab\DefaultTab\DefaultTabBHO.dll File name: DefaultTabBHO.dll
Size: 468.6 KB (468600 bytes)
MD5: f03cfcd636fedcdf8ddca41ce8719a00
Detection count: 11,640
File type: Dynamic link library
Mime Type: unknown/dll
Path: C:\Users\<username>\AppData\Roaming\DefaultTab\DefaultTab\DefaultTabBHO.dll
Group: Malware file
Last Updated: September 4, 2023
C:\Users\<username>\Util\DTChk.exe File name: DTChk.exe
Size: 141.42 KB (141424 bytes)
MD5: c724f9cc94e5e8ff49b0c1ea10829c62
Detection count: 10,179
File type: Executable File
Mime Type: unknown/exe
Path: C:\Users\<username>\Util\DTChk.exe
Group: Malware file
Last Updated: January 30, 2022
%SYSTEMDRIVE%\Users\<username>\dtdata\R002.exe File name: R002.exe
Size: 193.11 KB (193112 bytes)
MD5: c649bd38c31322113468d2998966b2b7
Detection count: 9,591
File type: Executable File
Mime Type: unknown/exe
Path: %SYSTEMDRIVE%\Users\<username>\dtdata\R002.exe
Group: Malware file
Last Updated: October 8, 2023
C:\Users\<username>\Util\DTChk.exe File name: DTChk.exe
Size: 197.23 KB (197232 bytes)
MD5: a3cb86169694053c550b9aa528e8e2f5
Detection count: 8,909
File type: Executable File
Mime Type: unknown/exe
Path: C:\Users\<username>\Util\DTChk.exe
Group: Malware file
Last Updated: June 18, 2022
%PUBLIC%\Util\DTChk.exe File name: DTChk.exe
Size: 197.23 KB (197232 bytes)
MD5: e8bc5fd5f80cdb59429cd0ce8e91d41a
Detection count: 8,254
File type: Executable File
Mime Type: unknown/exe
Path: %PUBLIC%\Util\DTChk.exe
Group: Malware file
Last Updated: August 19, 2023
%PUBLIC%\Util\DTChk.exe File name: DTChk.exe
Size: 141.42 KB (141424 bytes)
MD5: 07f47baebdaeab76fc1cd346eb1aba33
Detection count: 5,228
File type: Executable File
Mime Type: unknown/exe
Path: %PUBLIC%\Util
Group: Malware file
Last Updated: August 15, 2022
%WINDIR%\SysWOW64\config\systemprofile\AppData\Roaming\defaulttab\defaulttab\DefaultTabBHO.dll File name: DefaultTabBHO.dll
Size: 470.64 KB (470648 bytes)
MD5: 4b1858d4620a29d822abc80a5088d51e
Detection count: 3,963
File type: Dynamic link library
Mime Type: unknown/dll
Path: %WINDIR%\SysWOW64\config\systemprofile\AppData\Roaming\defaulttab\defaulttab\DefaultTabBHO.dll
Group: Malware file
Last Updated: July 13, 2023
%PUBLIC%\Util\DTChk.exe File name: DTChk.exe
Size: 197.23 KB (197232 bytes)
MD5: bf82c8e4e2118c46dd1f75a4aa5408de
Detection count: 3,145
File type: Executable File
Mime Type: unknown/exe
Path: %PUBLIC%\Util\DTChk.exe
Group: Malware file
Last Updated: June 16, 2023
C:\Users\<username>\AppData\Roaming\DefaultTab\DefaultTab\DefaultTabBHO.dll File name: DefaultTabBHO.dll
Size: 468.6 KB (468600 bytes)
MD5: 0a4c60fc66d3b775c1c985247012c64b
Detection count: 1,375
File type: Dynamic link library
Mime Type: unknown/dll
Path: C:\Users\<username>\AppData\Roaming\DefaultTab\DefaultTab\DefaultTabBHO.dll
Group: Malware file
Last Updated: January 3, 2023
C:\Windows\system32\config\systemprofile\AppData\Roaming\defaulttab\defaulttab\DefaultTabBHO.dll File name: DefaultTabBHO.dll
Size: 468.6 KB (468600 bytes)
MD5: 4134a411f503ef121675b6e53b852f35
Detection count: 1,009
File type: Dynamic link library
Mime Type: unknown/dll
Path: C:\Windows\system32\config\systemprofile\AppData\Roaming\defaulttab\defaulttab\DefaultTabBHO.dll
Group: Malware file
Last Updated: June 16, 2023
C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\defaulttab\defaulttab\DefaultTabBHO.dll File name: DefaultTabBHO.dll
Size: 468.6 KB (468600 bytes)
MD5: 5f593cac9f6741cde9c229b077a495cf
Detection count: 515
File type: Dynamic link library
Mime Type: unknown/dll
Path: C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\defaulttab\defaulttab\DefaultTabBHO.dll
Group: Malware file
Last Updated: February 16, 2022
%SYSTEMDRIVE%\defaulttab\defaulttab\DefaultTabBHO.dll File name: DefaultTabBHO.dll
Size: 468.6 KB (468600 bytes)
MD5: 4426e56b378ce7b990169b55e3555740
Detection count: 136
File type: Dynamic link library
Mime Type: unknown/dll
Path: %SYSTEMDRIVE%\defaulttab\defaulttab\DefaultTabBHO.dll
Group: Malware file
Last Updated: August 19, 2023
%APPDATA%\DefaultTab\DefaultTab\DTReg.exe File name: DTReg.exe
Size: 58.97 KB (58976 bytes)
MD5: 5808d8d4632563f2e79c9f29197b3674
Detection count: 21
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%\DefaultTab\DefaultTab
Group: Malware file
Last Updated: May 27, 2014
%PROGRAMFILES(x86)%\Search Results Toolbar\Datamngr\DatamngrCoordinator.exe File name: DatamngrCoordinator.exe
Size: 4.55 MB (4552192 bytes)
MD5: c3c8797e5ee2ed85e0dba33b8a891ba1
Detection count: 12
File type: Executable File
Mime Type: unknown/exe
Path: %PROGRAMFILES(x86)%\Search Results Toolbar\Datamngr
Group: Malware file
Last Updated: August 5, 2017
%SystemDrive%\Users\<username>\Util\DTChk.exe File name: DTChk.exe
Size: 236.11 KB (236115 bytes)
MD5: 95969c77e2e69819849cdc5673d0bd7f
Detection count: 9
File type: Executable File
Mime Type: unknown/exe
Path: %SystemDrive%\Users\<username>\Util
Group: Malware file
Last Updated: June 2, 2014
%PUBLIC%\Util\DTChk.exe File name: DTChk.exe
Size: 224.36 KB (224368 bytes)
MD5: cc98b8c0f54ec762bb4cf898f2b96da2
Detection count: 9
File type: Executable File
Mime Type: unknown/exe
Path: %PUBLIC%\Util
Group: Malware file
Last Updated: June 2, 2014
%SystemDrive%\Users\<username>\dtdata\R001.exe File name: R001.exe
Size: 153.65 KB (153659 bytes)
MD5: 744e70443bdf26713cfa1d24e32aca92
Detection count: 9
File type: Executable File
Mime Type: unknown/exe
Path: %SystemDrive%\Users\<username>\dtdata
Group: Malware file
Last Updated: November 17, 2014
%SystemDrive%\Users\<username>\dtdata\R002.exe File name: R002.exe
Size: 287.8 KB (287803 bytes)
MD5: 644b1ec961307113ce2d9a39e02d66f7
Detection count: 9
File type: Executable File
Mime Type: unknown/exe
Path: %SystemDrive%\Users\<username>\dtdata
Group: Malware file
Last Updated: November 17, 2014
%SystemDrive%\Users\<username>\Util\DTChk.exe File name: DTChk.exe
Size: 236.11 KB (236115 bytes)
MD5: ec113774356e3de24b518978cfbbda88
Detection count: 5
File type: Executable File
Mime Type: unknown/exe
Path: %SystemDrive%\Users\<username>\Util
Group: Malware file
Last Updated: June 2, 2014
%PUBLIC%\Util\DTChk.exe File name: DTChk.exe
Size: 148.07 KB (148076 bytes)
MD5: 0cdd3bc9e5d7334b42f8b340dc26b712
Detection count: 5
File type: Executable File
Mime Type: unknown/exe
Path: %PUBLIC%\Util
Group: Malware file
Last Updated: June 2, 2014

More files

Registry Modifications

The following newly produced Registry Values are:

CLSID{1F8EDE97-36D5-422A-B8F0-9406E2D87C60}{38495740-0035-4471-851E-F5BBB86AB085}{72D89EBF-0C5D-4190-91FD-398E45F1D007}{7F6AFBF1-E065-4627-A2FD-810366367D01}{A1E28287-1A31-4b0f-8D05-AA8C465D3C5A}{BE89FFB3-7F9C-4A16-B475-98B195A06628}{FEB62B15-CC00-4736-AAEC-BA046C9DFF73}Regexp file mask%PUBLIC%\Util\DTChk.exe%Temp%\DefaultTabSetup[RANDOM CHARACTERS].exeHKEY..\..\..\..{RegistryKeys}Software\AppDataLow\Software\DefaultTabSOFTWARE\Classes\AppID\DefaultTabBHO.DLLSOFTWARE\Classes\DefaultTabBHO.DefaultTabBrowserSOFTWARE\Classes\DefaultTabBHO.DefaultTabBrowser.1SOFTWARE\Classes\DefaultTabBHO.DefaultTabBrowserActiveXSOFTWARE\Classes\DefaultTabBHO.DefaultTabBrowserActiveX.1SOFTWARE\Classes\Wow6432Node\AppID\DefaultTabBHO.DLLSoftware\Default TabSOFTWARE\Google\Chrome\NativeMessagingHosts\default_tab_hostSoftware\Microsoft\Internet Explorer\Approved Extensions\{7F6AFBF1-E065-4627-A2FD-810366367D01}Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration{7F6AFBF1-E065-4627-A2FD-810366367D01}Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration{A1E28287-1A31-4B0F-8D05-AA8C465D3C5A}Software\Microsoft\Internet Explorer\Protect Approved Extensions\{7F6AFBF1-E065-4627-A2FD-810366367D01}SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\SCHEDULE\TASKCACHE\TREE\Default2CheckSOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\SCHEDULE\TASKCACHE\TREE\DefaultCheckSOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\SCHEDULE\TASKCACHE\TREE\DefaultRegSoftware\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{7F6AFBF1-E065-4627-A2FD-810366367D01}SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\PreApproved\{A1E28287-1A31-4B0F-8D05-AA8C465D3C5A}Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{7F6AFBF1-E065-4627-A2FD-810366367D01}Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{7F6AFBF1-E065-4627-A2FD-810366367D01}Software\Microsoft\Windows\CurrentVersion\Policies\Ext\CLSID\{7F6AFBF1-E065-4627-A2FD-810366367D01}Software\Microsoft\Windows\CurrentVersion\Policies\Ext\CLSID\{A1E28287-1A31-4B0F-8D05-AA8C465D3C5A}SOFTWARE\Wow6432Node\Classes\AppID\DefaultTabBHO.DLLSOFTWARE\Wow6432Node\Default TabSOFTWARE\Wow6432Node\DefaultTabSOFTWARE\Wow6432Node\Google\Chrome\NativeMessagingHosts\default_tab_hostSOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{B2D33ED6-EBBD-467C-BF6F-F175D9B51363}SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{BAD84EE2-624D-4e7c-A8BB-41EFD720FD77}SOFTWARE\Wow6432Node\Microsoft\Tracing\DefaultTabSearch_RASAPI32SOFTWARE\Wow6432Node\Microsoft\Tracing\DefaultTabSearch_RASMANCSSOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Ext\PreApproved\{7F6AFBF1-E065-4627-A2FD-810366367D01}SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Ext\PreApproved\{A1E28287-1A31-4B0F-8D05-AA8C465D3C5A}SYSTEM\ControlSet001\services\DefaultTabSearchSYSTEM\ControlSet001\services\DefaultTabUpdateSYSTEM\ControlSet002\services\DefaultTabSearchSYSTEM\ControlSet002\services\DefaultTabUpdateSYSTEM\CurrentControlSet\services\DefaultTabSearchSYSTEM\CurrentControlSet\services\DefaultTabUpdateHKEY_LOCAL_MACHINE\Software\[APPLICATION]\Microsoft\Windows\CurrentVersion\Uninstall..{Uninstaller}DefaultTabDefaultTab Chrome

Additional Information

The following directories were created:
%APPDATA%\DefaultTab%PROGRAMFILES%\DefaultTab%PROGRAMFILES(x86)%\DefaultTab%TMP%\installdt.tmp%WINDIR%\system32\config\systemprofile\AppData\Roaming\defaulttab
The following URL's were detected:
https://www.mysearchresults.com/search?
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