Posted: June 5, 2013
Threat Metric
Threat Level: 2/10
Infected PCs 6,694

LessTabs Description

Marketing for LessTabs proclaims LessTabs as a utility that enables you to examine various website links without any need to open a new window or tab. However, while LessTabs does seem to provide this function, malware experts also have analyzed several undesirable elements in LessTabs that can make LessTabs classifiable as adware or a Potentially Unwanted Program (PUP). LessTabs alters several browser settings in ways that can reduce your web-browsing security, installs itself to all major browsers by default, and – most visibly – displays advertisements to derive easy revenue from anyone who uses the LessTabs plugin. Adware like LessTabs typically should be deleted on a regular basis, and doing so (hopefully with relevant anti-malware tools) is especially encouraged on account of the security issues raised by LessTabs's mere presence.

LessTabs for You... Means More Money for LessTabs Than Usual

To LessTabs's credit, LessTabs does offer some legitimate web-browsing features that you may or may not find convenient. However, SpywareRemove.com malware experts are forced to warn any would-be users of LessTabs that this program's drawbacks outweigh its advantages by a fairly heavy margin. It also should be emphasized that, since LessTabs's installs itself to all common brands of browsers by default, these changes are relevant to all of your browsers (unless noted otherwise):

  • LessTabs will insert advertisements into the websites that you browse. These advertisements appear to be LessTabs's main revenue source and can vary in format, including pop-ups, pop-unders, banners and text-based links.
  • LessTabs increases the time threshold of the IE Load Time Alert.
  • LessTabs disables Internet Explorer-based Accelerators.
  • LessTabs will disable the Content Security Policy, which guards against script exploits and data injection attacks (like the adware functions that LessTabs uses to enable its advertisements).

While LessTabs elaborates on all of these 'features' freely and claims that they are implemented for the quality of your web-browsing experience, SpywareRemove.com malware researchers can see little justification for them, and particularly consider disabling the CSP to be a dangerous and unwarranted function.

Why Less is More When It Comes to Your Browser

Unnecessary browser add-ons with exceptionally risky side effects, such as LessTabs, always should be removed from your computer regularly, even when their side effects don't cause any immediate exposure to malicious web content or other PC threats. Since LessTabs makes a range of browser-indiscriminate settings changes that can endanger your computer's web-browsing safety, SpywareRemove.com malware researchers suggest you use anti-malware tools to clean up LessTabs and the system changes that follow in its wake.

Advertisements associated with LessTabs don't appear to be screened for your safety, and LessTabs explicitly denies any responsibility related to the content of the advertisements and sites that LessTabs promotes. With this kind of problems on your mind, if you do find your browser being subjected to LessTabs's advertisements, you should avoid any needless contact with them – no matter how good their offers may seem at a first glance.


Suspicious file [Panda]AdWare.Lesstabs [Ikarus]Adware.Lesstabs.A (B)TROJ_GEN.F47V0512Adware.Lesstabs.A

Use SpyHunter to Detect and Remove PC Threats

If you are concerned that malware or PC threats similar to LessTabs may have infected your computer, we recommend you start an in-depth system scan with SpyHunter. SpyHunter is an advanced malware protection and remediation application that offers subscribers a comprehensive method for protecting PCs from malware, in addition to providing one-on-one technical support service.

Download SpyHunter's Malware Scanner

Note: SpyHunter's free version is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter's malware tool to remove the malware threats. Learn more on SpyHunter. If you would like to uninstall SpyHunter for any reason, please follow these uninstall instructions. To learn more about our policies and practices, visit our EULA, Privacy Policy and Threat Assessment Criteria.

Why can't I open any program including SpyHunter? You may have a malware file running in memory that kills any programs that you try to launch on your PC. Tip: Download SpyHunter from a clean computer, copy it to a USB thumb drive, DVD or CD, then install it on the infected PC and run SpyHunter's malware scanner.

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:

%PROGRAMFILES%\LessTabs\IE32\LessTabsClientIE.dll File name: LessTabsClientIE.dll
Size: 139.8 KB (139800 bytes)
MD5: ef69a5e1bebad743f4969a173acee597
Detection count: 32
File type: Dynamic link library
Mime Type: unknown/dll
Path: %PROGRAMFILES%\LessTabs\IE32\
Group: Malware file
Last Updated: May 25, 2017
lesstabs-setupb.exe File name: lesstabs-setupb.exe
Size: 1.22 MB (1220936 bytes)
MD5: b8b72f821e8a33d2225273e0b30b82bc
Detection count: 19
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: June 23, 2020

More files

Registry Modifications

The following newly produced Registry Values are:

HKEY_LOCAL_MACHINE\Software\[APPLICATION]\Microsoft\Windows\CurrentVersion\Uninstall..{Uninstaller}LessTabsRegistry keySOFTWARE\Wow6432Node\Google\Chrome\Extensions\cekmkdkefndbeciggfanobcemjnppbbbSOFTWARE\Wow6432Node\LessTabsSOFTWARE\Wow6432Node\Microsoft\Tracing\lesstabs-setup_RASAPI32SOFTWARE\Wow6432Node\Microsoft\Tracing\lesstabs-setup_RASMANCSSOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{3178A392-8963-471E-B7A2-969CB58D6496}SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Ext\PreApproved\{3178A392-8963-471E-B7A2-969CB58D6496}CLSID{3178A392-8963-471E-B7A2-969CB58D6496}{8A2BBD3A-2130-4882-B198-863271F320DE}Directory%LOCALAPPDATA%\Google\Chrome\User Data\Default\Extensions\cekmkdkefndbeciggfanobcemjnppbbb%PROGRAMFILES%\LessTabs%PROGRAMFILES%\Mozilla Firefox\extensions\lesstabs@lesstabs.com%PROGRAMFILES(x86)%\LessTabs%PROGRAMFILES(x86)%\Mozilla Firefox\extensions\lesstabs@lesstabs.com

Leave a Reply

Please note that we are not able to assist with billing and support issues regarding SpyHunter or other products. If you're having issues with SpyHunter, please get in touch with SpyHunter customer support through your SpyHunter. If you have SpyHunter billing questions, we recommend you check the Billing FAQ. For general suggestions or feedback, contact us.