Clspring Trojan

Clspring malware description and removal detail
Categories:Trojan,BHO
Also known as:

[Kaspersky]AdWare.Win32.PrutiyScan.ak,AdWare.Win32.PurityScan.ak,Trojan-Downloader.Win32.PurityScan.cl,Trojan-Downloader.Win32.PurityScan.eb,AdWare.Win32.PurityScan.gl;
[McAfee]Adware-ClickSpring;
[Other]Win32/Clspring.GB,Adware.Purityscan,Win32/Clspring.FZ,Adware.PurityScan,ClickSpring.PuritySCAN,purityscan,Win32/Clspring.GG,ClickSpring,Win32/Clspring.GR,Win32/Clspring.GW,Troj/PurScan-BE,Win32/Clspring!generic,Adware:Win32/ClickSpring.PuritySCAN,Win32/Clspring.GZ,Trojan.Adclicker
Visible Symptoms:
Files in system folders:
[%APPDATA%]\CROSOF~1.NET\msconfig.exe
[%APPDATA%]\FNTS~1\msiexec.exe
[%APPDATA%]\YMBOLS~1\lsass.exe
[%INTERNET_CACHE%]\Content.IE5\4LM3S9IZ\116[1].net
[%INTERNET_CACHE%]\Content.IE5\5461ZY3K\!update-4395[1].0000
[%INTERNET_CACHE%]\content.ie5\5MOG1H6V\!update-4395[1].0000
[%INTERNET_CACHE%]\content.ie5\DSUZ3EO9\!update-4395[1].0000
[%INTERNET_CACHE%]\Content.IE5\KLYBC1E3\!update-4395[1].0000
[%PROFILE_TEMP%]\!update.exe
[%PROFILE_TEMP%]\!update.exe.ren
[%PROFILE_TEMP%]\b116.exe
[%PROFILE_TEMP%]\sdexe.exe
[%PROFILE_TEMP%]\YazzleBundle-1281.exe
[%PROFILE_TEMP%]\yazzlesnet.exe
[%PROGRAM_FILES%]\ASEMBL~1\nopdb.exe
[%PROGRAM_FILES%]\RACLE~1\tracert.exe
[%PROGRAM_FILES_COMMON%]\%A5%CCICRO~1.NET\svchost.exe
[%PROGRAM_FILES_COMMON%]\ASEMBL~1\services.exe
[%SYSTEM%]\ICROSO~1.NET\lsass.exe
[%SYSTEM%]\ICROSO~1.NET\tracert.exe
[%SYSTEM%]\regedit.dll
[%SYSTEM%]\smss.dll
[%SYSTEM%]\SSTEM3~1\dexplore.exe
[%SYSTEM%]\wuauboot.dll
[%WINDOWS%]\CROSOF~1.NET\winlogon.exe
[%WINDOWS%]\YAXUninst.exe
[%SYSTEM%]\Outerinfo-1199.exe
[%APPDATA%]\CROSOF~1.NET\msconfig.exe
[%APPDATA%]\FNTS~1\msiexec.exe
[%APPDATA%]\YMBOLS~1\lsass.exe
[%INTERNET_CACHE%]\Content.IE5\4LM3S9IZ\116[1].net
[%INTERNET_CACHE%]\Content.IE5\5461ZY3K\!update-4395[1].0000
[%INTERNET_CACHE%]\content.ie5\5MOG1H6V\!update-4395[1].0000
[%INTERNET_CACHE%]\content.ie5\DSUZ3EO9\!update-4395[1].0000
[%INTERNET_CACHE%]\Content.IE5\KLYBC1E3\!update-4395[1].0000
[%PROFILE_TEMP%]\!update.exe
[%PROFILE_TEMP%]\!update.exe.ren
[%PROFILE_TEMP%]\b116.exe
[%PROFILE_TEMP%]\sdexe.exe
[%PROFILE_TEMP%]\YazzleBundle-1281.exe
[%PROFILE_TEMP%]\yazzlesnet.exe
[%PROGRAM_FILES%]\ASEMBL~1\nopdb.exe
[%PROGRAM_FILES%]\RACLE~1\tracert.exe
[%PROGRAM_FILES_COMMON%]\%A5%CCICRO~1.NET\svchost.exe
[%PROGRAM_FILES_COMMON%]\ASEMBL~1\services.exe
[%SYSTEM%]\ICROSO~1.NET\lsass.exe
[%SYSTEM%]\ICROSO~1.NET\tracert.exe
[%SYSTEM%]\regedit.dll
[%SYSTEM%]\smss.dll
[%SYSTEM%]\SSTEM3~1\dexplore.exe
[%SYSTEM%]\wuauboot.dll
[%WINDOWS%]\CROSOF~1.NET\winlogon.exe
[%WINDOWS%]\YAXUninst.exe
[%SYSTEM%]\Outerinfo-1199.exe

In order to ensure that the Clspring is launched automatically each time the system is booted, the Clspring adds a link to its executable file in the system registry:
HKLM\Microsoft\Windows\CurrentVersion\Run
[%APPDATA%]\CROSOF~1.NET\msconfig.exe
[%APPDATA%]\FNTS~1\msiexec.exe
[%APPDATA%]\YMBOLS~1\lsass.exe
[%PROFILE_TEMP%]\!update.exe
[%PROFILE_TEMP%]\!update.exe.ren
[%PROFILE_TEMP%]\b116.exe
[%PROFILE_TEMP%]\sdexe.exe
[%PROFILE_TEMP%]\YazzleBundle-1281.exe
[%PROFILE_TEMP%]\yazzlesnet.exe
[%PROGRAM_FILES%]\ASEMBL~1\nopdb.exe
[%PROGRAM_FILES%]\RACLE~1\tracert.exe
[%PROGRAM_FILES_COMMON%]\%A5%CCICRO~1.NET\svchost.exe
[%PROGRAM_FILES_COMMON%]\ASEMBL~1\services.exe
[%SYSTEM%]\ICROSO~1.NET\lsass.exe
[%SYSTEM%]\ICROSO~1.NET\tracert.exe
[%SYSTEM%]\SSTEM3~1\dexplore.exe
[%WINDOWS%]\CROSOF~1.NET\winlogon.exe
[%WINDOWS%]\YAXUninst.exe
[%SYSTEM%]\Outerinfo-1199.exe

Platforms / OS: Windows 95, Windows 98, Windows 98 SE, Windows NT, Windows ME, Windows 2000, Windows XP, Windows 2003, Windows Vista

Detecting Clspring:

Files:
[%APPDATA%]\CROSOF~1.NET\msconfig.exe
[%APPDATA%]\FNTS~1\msiexec.exe
[%APPDATA%]\YMBOLS~1\lsass.exe
[%INTERNET_CACHE%]\Content.IE5\4LM3S9IZ\116[1].net
[%INTERNET_CACHE%]\Content.IE5\5461ZY3K\!update-4395[1].0000
[%INTERNET_CACHE%]\content.ie5\5MOG1H6V\!update-4395[1].0000
[%INTERNET_CACHE%]\content.ie5\DSUZ3EO9\!update-4395[1].0000
[%INTERNET_CACHE%]\Content.IE5\KLYBC1E3\!update-4395[1].0000
[%PROFILE_TEMP%]\!update.exe
[%PROFILE_TEMP%]\!update.exe.ren
[%PROFILE_TEMP%]\b116.exe
[%PROFILE_TEMP%]\sdexe.exe
[%PROFILE_TEMP%]\YazzleBundle-1281.exe
[%PROFILE_TEMP%]\yazzlesnet.exe
[%PROGRAM_FILES%]\ASEMBL~1\nopdb.exe
[%PROGRAM_FILES%]\RACLE~1\tracert.exe
[%PROGRAM_FILES_COMMON%]\%A5%CCICRO~1.NET\svchost.exe
[%PROGRAM_FILES_COMMON%]\ASEMBL~1\services.exe
[%SYSTEM%]\ICROSO~1.NET\lsass.exe
[%SYSTEM%]\ICROSO~1.NET\tracert.exe
[%SYSTEM%]\regedit.dll
[%SYSTEM%]\smss.dll
[%SYSTEM%]\SSTEM3~1\dexplore.exe
[%SYSTEM%]\wuauboot.dll
[%WINDOWS%]\CROSOF~1.NET\winlogon.exe
[%WINDOWS%]\YAXUninst.exe
[%SYSTEM%]\Outerinfo-1199.exe
[%APPDATA%]\CROSOF~1.NET\msconfig.exe
[%APPDATA%]\FNTS~1\msiexec.exe
[%APPDATA%]\YMBOLS~1\lsass.exe
[%INTERNET_CACHE%]\Content.IE5\4LM3S9IZ\116[1].net
[%INTERNET_CACHE%]\Content.IE5\5461ZY3K\!update-4395[1].0000
[%INTERNET_CACHE%]\content.ie5\5MOG1H6V\!update-4395[1].0000
[%INTERNET_CACHE%]\content.ie5\DSUZ3EO9\!update-4395[1].0000
[%INTERNET_CACHE%]\Content.IE5\KLYBC1E3\!update-4395[1].0000
[%PROFILE_TEMP%]\!update.exe
[%PROFILE_TEMP%]\!update.exe.ren
[%PROFILE_TEMP%]\b116.exe
[%PROFILE_TEMP%]\sdexe.exe
[%PROFILE_TEMP%]\YazzleBundle-1281.exe
[%PROFILE_TEMP%]\yazzlesnet.exe
[%PROGRAM_FILES%]\ASEMBL~1\nopdb.exe
[%PROGRAM_FILES%]\RACLE~1\tracert.exe
[%PROGRAM_FILES_COMMON%]\%A5%CCICRO~1.NET\svchost.exe
[%PROGRAM_FILES_COMMON%]\ASEMBL~1\services.exe
[%SYSTEM%]\ICROSO~1.NET\lsass.exe
[%SYSTEM%]\ICROSO~1.NET\tracert.exe
[%SYSTEM%]\regedit.dll
[%SYSTEM%]\smss.dll
[%SYSTEM%]\SSTEM3~1\dexplore.exe
[%SYSTEM%]\wuauboot.dll
[%WINDOWS%]\CROSOF~1.NET\winlogon.exe
[%WINDOWS%]\YAXUninst.exe
[%SYSTEM%]\Outerinfo-1199.exe

Folders:
[%PROGRAMS%]\Outerinfo
[%PROGRAM_FILES%]\Outerinfo

Registry Keys:
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\uninstall\outerinfo
HKEY_CLASSES_ROOT\clsid\{2e9d4c81-9f27-4c14-b804-7b0f6bc88a4f}
HKEY_CLASSES_ROOT\clsid\{55bb27b1-b15e-b2df-2c22-bcce64b8e8b7}
HKEY_CLASSES_ROOT\clsid\{661d9ab6-595d-0b89-2bc2-0295c1a289b1}
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\explorer\browser helper objects\{2e9d4c81-9f27-4c14-b804-7b0f6bc88a4f}
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\explorer\browser helper objects\{55bb27b1-b15e-b2df-2c22-bcce64b8e8b7}
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\explorer\browser helper objects\{661d9ab6-595d-0b89-2bc2-0295c1a289b1}
HKEY_LOCAL_MACHINE\software\outerinfo

Registry Values:
HKEY_CURRENT_USER\software\microsoft\internet explorer\urlsearchhooks
HKEY_CURRENT_USER\software\microsoft\windows\currentversion\run
HKEY_CURRENT_USER\software\microsoft\windows\currentversion\run
HKEY_CURRENT_USER\software\mozilla\firefox\extensions

Removing Clspring:

An up-to-date copy of ExterminateIt should detect and prevent infection from Clspring.

If you do not have ExterminateIt and you are worried that you may have infected computer, you could run trial version of ExterminateIt, or remove Clspring manually.

To completely manually remove Clspring malware from your computer, you need to delete the Windows registry keys and registry values, the files and folders associated with Clspring.

  1. Use Task Manager to terminate the Clspring process.
  2. Delete the original Clspring file and folders.
  3. Delete the system registry key parameters
  4. Update your antivirus databases or buy antivirus software and perform a full scan of the computer.

We recommends that all Internet users back up any important information on their computers, enable maximum protection from network attacks and malicious code on their computers, refrain from executing suspicious programs received from untrustworthy sources.

ExterminateIt effectively and automatically removes Clspring from you computer and is a good solution for those who are seeking easy and effective protection for their computer from Trojan Horses, Rootkits, Backdoors, spyware, botnets, keystroke loggers, dialers and other malicious software(malware).

Download ExterminateIt! to instantly get rid of Clspring!

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