Home Malware Programs Adware Gem Grab Ads

Gem Grab Ads

Posted: August 7, 2015

Threat Metric

Threat Level: 2/10
Infected PCs: 283
First Seen: August 3, 2015
Last Seen: May 11, 2023
OS(es) Affected: Windows

Gem Grab is a freeware product that may deliver unwanted advertising content by modifying your Web browser's settings. Since advertising from Gem Grab loads automatically, and without controls for disabling them universally, they may cause your browser to experience performance issues or expose you to Web security hazards. Unless you have unusual justifications for a different response, most PC users should treat deleting Gem Grab with anti-adware solutions as part of their standard browser maintenance.

The Gem of an Adware Problem

Gem Grab is adware that malware analysts suspect of being derived from the Ads By Name family, which has included numerous variants for most Windows browsers. Like Coupon Titan Ads or other members of that adware collective, Gem Grab may use non-standard, non-consensual techniques to install itself on your PC and then launch browser advertisements for its personal revenue. Gem Grab is most likely to promote its affiliated advertisements as product recommendations, sponsored links and other shopping or search-related benefits.

Major distribution for Gem Grab advertisements only has been tracked since early August of 2015, with Firefox users being confirmed among those affected. Symptoms reported as a result of Gem Grab Ads being installed may include:

  • Advertising may inject itself into arbitrary Web pages. These advertisements primarily may include graphical elements like banners, but also may include text content and linked keywords.
  • You may see changes to your default browser homepage or search engine. Gem Grab may redirect your searches to another search site, modify the search results or lock your homepage to one of its preference, regardless of your browser's settings.
  • Advertisements in individual pop-up windows or tabs that may launch automatically, separated from your normal Web content.

Gem Grab has none of the expected attributes of a Trojan or other form of threat, although some resources may colloquially refer to Gem Grab as a virus. However, its advertising may slow your browser's loading times, cause general performance issues or expose your browser to corrupted scripts, online hoaxes and other PC threats.

Dimming the Sparkle of Gem Grab from Your Browser

Gem Grab is a Potentially Unwanted Program or a PUP that does not intend to harm your PC explicitly. Despite that categorization, malware experts continue advising PC owners to delete Gem Grab and other PUPs that don't make strong arguments for their presence. Extensive exposure to content promoted by Gem Grab may risk introducing additional threats through unsafe advertisements, regardless of whether or not you interact with any advertisements. Firefox users are most likely to be especially at risk from current versions of Gem Grab. However, different variants of Ads By Name products have been seen in IE, Chrome and other browsers.

Manual deletion of Gem Grab Ads may not remove all browser changes associated with this adware, including those responsible for launching its advertisements. Anti-adware products should be able to identify Gem Grab either specifically or heuristically while scanning your PC, after which they should be allowed to uninstall Gem Grab. After doing so, malware experts advise resetting all browser settings that could have been modified and refreshing your browser's cache.

The model for distribution being used by Gem Grab currently is unidentified, and malware experts have found no websites or consensual download links associated with the brand.

Technical Details

Registry Modifications

The following newly produced Registry Values are:

HKEY..\..\..\..{RegistryKeys}SOFTWARE\GemGrabSOFTWARE\Microsoft\Internet Explorer\LowRegistry\DOMStorage\gemgrab-a.akamaihd.netSOFTWARE\Wow6432Node\GemGrabSYSTEM\ControlSet001\services\Service Mgr GemGrabSYSTEM\ControlSet001\services\Update Mgr GemGrabSYSTEM\ControlSet002\services\Service Mgr GemGrabSYSTEM\ControlSet002\services\Update Mgr GemGrabSYSTEM\CurrentControlSet\services\Service Mgr GemGrabSYSTEM\CurrentControlSet\services\Update Mgr GemGrab

Additional Information

The following directories were created:
%PROGRAMFILES%\Gem Grab%PROGRAMFILES(x86)%\Gem Grab%temp%\Gem Grab
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