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Removal instructions for CommonShare

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Started by Metallica , Jul 16 2014 10:40 AM

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#1
Metallica
Posted 16 July 2014 - 10:40 AM

Metallica

    Spyware Veteran

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  • 33,101 posts
Content is republished with permission from Malwarebytes.

What is CommonShare?

The Malwarebytes research team has determined that CommonShare is a browser hijacker. These so-called "hijackers" alter your startpage or searchscopes so that the effected browser visits their site or one of their choice. This one also displays advertisements.

How do I know if my computer is effected by CommonShare?

This is how the first screen of the installer looks:

main.png

And you may see these toolbars/add-ons:

warning1.png

warning2.png

or this entry in your list of installed programs:

warning4.png

How did CommonShare get on my computer?

Browser hijackers use different methods for distributing themselves. This particular one was bundled with other software.

How do I remove CommonShare?

Our program Malwarebytes Anti-Malware can detect and remove this potentially unwanted application.
  • Please download Malwarebytes Anti-Malware to your desktop.
  • Double-click mbam-setup-version.exe and follow the prompts to install the program.
  • At the end, be sure a check-mark is placed next to the following:
    • Enable free trial of Malwarebytes Anti-Malware Premium
    • Launch Malwarebytes Anti-Malware
  • Then click Finish.
  • If an update is found, you will be prompted to download and install the latest version.
  • Once the program has loaded, select Scan now. Or select the Threat Scan from the Scan menu.
  • When the scan is complete , make sure that everything is set to "Quarantine", and click Apply Actions.
  • Reboot your computer if prompted.
Is there anything else I need to do to get rid of CommonShare?
  • No, but for a full removal of the Firefox add-on you will need Malwarebytes Anti-Malware 2.00 beta or newer.
How would the full version of Malwarebytes Anti-Malware help protect me?

We hope our application and this guide have helped you eradicate this hijacker.

As you can see below the full version of Malwarebytes Anti-Malware would have protected you against the CommonShare hijacker. It would have warned you before the browser helper object could install itself, giving you a chance to stop it before it became too late.


protection1.png

Technical details for experts

Signs in a HijackThis log:
O2 - BHO: CommonShare - {b0022d3c-ca81-4a57-ba00-31650a761234} - C:\Program Files\CommonShare\CommonSharebho.dll
O23 - Service: Update CommonShare - Unknown owner - C:\Program Files\CommonShare\updateCommonShare.exe
Alterations made by the installer:

File system details  
---------------------------------------------
    Adds the folder C:\Program Files\CommonShare
       Adds the file 7za.exe"="7/9/2014 3:21 AM, 536064 bytes, A
       Adds the file CommonShare.ico"="7/9/2014 8:58 PM, 1150 bytes, A
       Adds the file CommonShareBHO.dll"="7/9/2014 8:58 PM, 249632 bytes, A
       Adds the file CommonShareUninstall.exe"="7/16/2014 2:26 PM, 240376 bytes, A
       Adds the file updateCommonShare.exe"="7/9/2014 8:58 PM, 318752 bytes, A
       Adds the file updateCommonShare.InstallState"="7/16/2014 2:26 PM, 5012 bytes, A
    In the existing folder C:\Users\{username}\AppData\Roaming\Mozilla\Firefox\Profiles\6qeoodjs.default-1401006518835\extensions
       Adds the file {e4a6645a-3f85-4e1f-aa41-8367978844db}.xpi"="7/9/2014 8:58 PM, 8905 bytes, A

Registry details  
------------------------------------------
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1AA60054-57D9-4F99-9A55-D0FBFBE7ECD3}]
       "(Default)"="REG_SZ", "92099177-55D5-446D-A5AD-25583F1FC74C"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{4AA46D49-459F-4358-B4D1-169048547C23}]
       "(Default)"="REG_SZ", "66D15FDA-25CA-4F87-8BBA-033E23979A47"
       "id"="REG_SZ", "148"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{b0022d3c-ca81-4a57-ba00-31650a761234}]
       "(Default)"="REG_SZ", "CommonShare"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{b0022d3c-ca81-4a57-ba00-31650a761234}\InprocServer32]
       "(Default)"="REG_SZ", "C:\Program Files\CommonShare\CommonSharebho.dll"
       "ThreadingModel"="REG_SZ", "Apartment"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{b0022d3c-ca81-4a57-ba00-31650a761234}\Programmable]
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{b0022d3c-ca81-4a57-ba00-31650a761234}\TypeLib]
       "(Default)"="REG_SZ", "{80c3a7e3-bbf6-43e7-aa65-62fc66978e84}"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{b0022d3c-ca81-4a57-ba00-31650a761234}\Version]
       "(Default)"="REG_SZ", "1.0"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{DCF89027-5BE4-49D0-8D9D-4EBCAC3B5E00}]
       "(Default)"="REG_SZ", "ICommonShareBHO"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{DCF89027-5BE4-49D0-8D9D-4EBCAC3B5E00}\ProxyStubClsid]
       "(Default)"="REG_SZ", "{00020424-0000-0000-C000-000000000046}"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{DCF89027-5BE4-49D0-8D9D-4EBCAC3B5E00}\ProxyStubClsid32]
       "(Default)"="REG_SZ", "{00020424-0000-0000-C000-000000000046}"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{DCF89027-5BE4-49D0-8D9D-4EBCAC3B5E00}\TypeLib]
       "(Default)"="REG_SZ", "{80C3A7E3-BBF6-43E7-AA65-62FC66978E84}"
       "Version"="REG_SZ", "1.0"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{80C3A7E3-BBF6-43E7-AA65-62FC66978E84}\1.0]
       "(Default)"="REG_SZ", "CommonShareIEClientLib"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{80C3A7E3-BBF6-43E7-AA65-62FC66978E84}\1.0\0\win32]
       "(Default)"="REG_SZ", "C:\Program Files\CommonShare\CommonSharebho.dll"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{80C3A7E3-BBF6-43E7-AA65-62FC66978E84}\1.0\FLAGS]
       "(Default)"="REG_SZ", "0"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{80C3A7E3-BBF6-43E7-AA65-62FC66978E84}\1.0\HELPDIR]
       "(Default)"="REG_SZ", "C:\Program Files\CommonShare"
    [HKEY_LOCAL_MACHINE\SOFTWARE\CommonShare]
       "iid"="REG_SZ", "def_CommonShare"
    [HKEY_LOCAL_MACHINE\SOFTWARE\CommonShare\Chrome]
       "sgc"="REG_SZ", "true"
    [HKEY_LOCAL_MACHINE\SOFTWARE\CommonShare\Firefox]
       "sff"="REG_SZ", "false"
    [HKEY_LOCAL_MACHINE\SOFTWARE\CommonShare\Internet Explorer]
       "sie"="REG_SZ", "false"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\updateCommonShare_RASAPI32]
       "ConsoleTracingMask"="REG_DWORD", -65536
       "EnableConsoleTracing"="REG_DWORD", 0
       "EnableFileTracing"="REG_DWORD", 0
       "FileDirectory"="REG_EXPAND_SZ, "%windir%\tracing"
       "FileTracingMask"="REG_DWORD", -65536
       "MaxFileSize"="REG_DWORD", 1048576
    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\updateCommonShare_RASMANCS
       "ConsoleTracingMask"="REG_DWORD", -65536
       "EnableConsoleTracing"="REG_DWORD", 0
       "EnableFileTracing"="REG_DWORD", 0
       "FileDirectory"="REG_EXPAND_SZ, "%windir%\tracing"
       "FileTracingMask"="REG_DWORD", -65536
       "MaxFileSize"="REG_DWORD", 1048576
    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{b0022d3c-ca81-4a57-ba00-31650a761234}]
       "(Default)"="REG_SZ", "CommonShare"
       "NoExplorer"="REG_DWORD", 1
    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\CommonShare]
       "DisplayIcon"="REG_SZ", "C:\Program Files\CommonShare\CommonShare.ico"
       "DisplayName"="REG_SZ", "CommonShare"
       "DisplayVersion"="REG_SZ", "2014.07.09.185238"
       "EstimatedSize"="REG_DWORD", 1084
       "HelpLink"="REG_SZ", "mailto:[email protected]"
       "InstallLocation"="REG_SZ", "C:\Program Files\CommonShare"
       "InstallTime"="REG_SZ", "2014-07-16 14:26:09"
       "NoModify"="REG_DWORD", 1
       "NoRepair"="REG_DWORD", 1
       "Publisher"="REG_SZ", "CommonShare"
       "QuietUninstallString"="REG_SZ", "C:\Program Files\CommonShare\CommonShareuninstall.exe /S"
       "UninstallString"="REG_SZ", "C:\Program Files\CommonShare\CommonShareuninstall.exe"
       "URLInfoAbout"="REG_SZ", "http://commonshare.net/support"
       "URLUpdateInfo"="REG_SZ", "http://commonshare.net"
    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Update CommonShare]
       "DisplayName"="REG_SZ", "Update CommonShare"
       "ErrorControl"="REG_DWORD", 1
       "FailureActions"="REG_BINARY, ......................
       "ImagePath"="REG_EXPAND_SZ, ""C:\Program Files\CommonShare\updateCommonShare.exe""
       "ObjectName"="REG_SZ", "LocalSystem"
       "Start"="REG_DWORD", 2
       "Type"="REG_DWORD", 16
    [HKEY_CURRENT_USER\Software\CommonShare]
       "id"="REG_SZ", "2014-07-16 14:26:09"
       "iid"="REG_SZ", "def_CommonShare"
       "is"="REG_SZ", "def_CommonShare"
    [HKEY_CURRENT_USER\Software\CommonShare\Chrome]
       "ug"="REG_SZ", "1BA33F72-E4B2-4BA8-921D-C57475FC59B3"
    [HKEY_CURRENT_USER\Software\CommonShare\Firefox]
       "ug"="REG_SZ", "79D5D865-59C6-430F-B7D1-649E201F249C"
    [HKEY_CURRENT_USER\Software\CommonShare\Internet Explorer]
       "ug"="REG_SZ", "BE1FC5C1-9088-4FA0-B25C-7B2F820DBE2B"
    [HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Approved Extensions]
       "{B0022D3C-CA81-4A57-BA00-31650A761234}"="REG_BINARY, ............
    [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{B0022D3C-CA81-4A57-BA00-31650A761234}]
       "Flags"="REG_DWORD", 1024
       "VerCache"="REG_BINARY, ......................
Malwarebytes Anti-Malware log:
Malwarebytes Anti-Malware
www.malwarebytes.org

Scan Date: 7/16/2014
Scan Time: 2:31:18 PM
Logfile: mbamCommonShare.txt
Administrator: Yes

Version: 2.00.2.1012
Malware Database: v2014.07.16.03
Rootkit Database: v2014.07.14.01
License: Free
Malware Protection: Disabled
Malicious Website Protection: Disabled
Self-protection: Disabled

OS: Windows 7 Service Pack 1
CPU: x86
File System: NTFS
User: Malwarebytes

Scan Type: Threat Scan
Result: Completed
Objects Scanned: 240911
Time Elapsed: 2 min, 46 sec

Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Disabled
Heuristics: Enabled
PUP: Enabled
PUM: Enabled

Processes: 1
PUP.Optional.CommonShare.A, C:\Program Files\CommonShare\updateCommonShare.exe, 3384, Delete-on-Reboot, [5ed50997c6b5f343296c158612ef51af]

Modules: 0
(No malicious items detected)

Registry Keys: 12
PUP.Optional.CommonShare.A, HKLM\SYSTEM\CURRENTCONTROLSET\SERVICES\Update CommonShare, Quarantined, [5ed50997c6b5f343296c158612ef51af], 
PUP.Optional.CommonShare.A, HKLM\SOFTWARE\CLASSES\CLSID\{b0022d3c-ca81-4a57-ba00-31650a761234}, Quarantined, [c66ddec297e42115cbc9f0ab58a912ee], 
PUP.Optional.CommonShare.A, HKLM\SOFTWARE\CLASSES\TYPELIB\{80c3a7e3-bbf6-43e7-aa65-62fc66978e84}, Quarantined, [c66ddec297e42115cbc9f0ab58a912ee], 
PUP.Optional.CommonShare.A, HKLM\SOFTWARE\CLASSES\INTERFACE\{DCF89027-5BE4-49D0-8D9D-4EBCAC3B5E00}, Quarantined, [c66ddec297e42115cbc9f0ab58a912ee], 
PUP.Optional.CommonShare.A, HKLM\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\BROWSER HELPER OBJECTS\{B0022D3C-CA81-4A57-BA00-31650A761234}, Quarantined, [c66ddec297e42115cbc9f0ab58a912ee], 
PUP.Optional.CommonShare.A, HKU\S-1-5-21-4016700205-1717049133-1125222536-1001-{ED1FC765-E35E-4C3D-BF15-2C2B11260CE4}-0\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXT\SETTINGS\{B0022D3C-CA81-4A57-BA00-31650A761234}, Quarantined, [c66ddec297e42115cbc9f0ab58a912ee], 
PUP.Optional.CommonShare.A, HKU\S-1-5-21-4016700205-1717049133-1125222536-1001-{ED1FC765-E35E-4C3D-BF15-2C2B11260CE4}-0\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXT\STATS\{B0022D3C-CA81-4A57-BA00-31650A761234}, Quarantined, [c66ddec297e42115cbc9f0ab58a912ee], 
PUP.Optional.CommonShare.A, HKLM\SOFTWARE\CLASSES\CLSID\{B0022D3C-CA81-4A57-BA00-31650A761234}\INPROCSERVER32, Quarantined, [c66ddec297e42115cbc9f0ab58a912ee], 
PUP.Optional.BrowseFox.A, HKLM\SOFTWARE\CLASSES\CLSID\{4AA46D49-459F-4358-B4D1-169048547C23}, Quarantined, [082b3b652f4c64d271d23d50a75b8779], 
PUP.Optional.CommonShare.A, HKLM\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\CommonShare, Quarantined, [48eb0997453642f4f41e8b3138ca44bc], 
PUP.Optional.CommonShare.A, HKLM\SOFTWARE\CommonShare, Quarantined, [8ba81b85fb80f046e72cebd124de8878], 
PUP.Optional.CommonShare.A, HKU\S-1-5-21-4016700205-1717049133-1125222536-1001-{ED1FC765-E35E-4C3D-BF15-2C2B11260CE4}-0\SOFTWARE\CommonShare, Quarantined, [55de653b0972f6409e76fbc15fa337c9], 

Registry Values: 0
(No malicious items detected)

Registry Data: 0
(No malicious items detected)

Folders: 1
PUP.Optional.CommonShare.A, C:\Program Files\CommonShare, Delete-on-Reboot, [48eb0997453642f4f41e8b3138ca44bc], 

Files: 8
PUP.Optional.CommonShare.A, C:\Program Files\CommonShare\updateCommonShare.exe, Delete-on-Reboot, [5ed50997c6b5f343296c158612ef51af], 
PUP.Optional.CommonShare.A, C:\Program Files\CommonShare\CommonShareBHO.dll, Quarantined, [c66ddec297e42115cbc9f0ab58a912ee], 
PUP.Optional.CommonShare.A, C:\Users\{username}\Desktop\CommonShare.exe, Quarantined, [9e95d1cf4a31f4423a5b8516a061c33d], 
PUP.Optional.CommonShare.A, C:\Program Files\CommonShare\CommonShare.ico, Quarantined, [48eb0997453642f4f41e8b3138ca44bc], 
PUP.Optional.CommonShare.A, C:\Program Files\CommonShare\7za.exe, Quarantined, [48eb0997453642f4f41e8b3138ca44bc], 
PUP.Optional.CommonShare.A, C:\Program Files\CommonShare\CommonShareUninstall.exe, Quarantined, [48eb0997453642f4f41e8b3138ca44bc], 
PUP.Optional.CommonShare.A, C:\Program Files\CommonShare\updateCommonShare.InstallState, Quarantined, [48eb0997453642f4f41e8b3138ca44bc], 
PUP.Optional.CommonShare.A, C:\Users\{username}\AppData\Roaming\Mozilla\Firefox\Profiles\6qeoodjs.default-1401006518835\extensions\{e4a6645a-3f85-4e1f-aa41-8367978844db}.xpi, Quarantined, [84afd0d06c0fc373d048a11bc141956b], 

Physical Sectors: 0
(No malicious items detected)


(end)
As mentioned before the full version of Malwarebytes Anti-Malware could have protected your computer against this threat.
We use different ways of protecting your computer(s):
  • Dynamically Blocks Malware Sites & Servers
  • Malware Execution Prevention
Save yourself the hassle and get protected.
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