Home Malware Programs Browser Hijackers Moosjs.cn

Moosjs.cn

Posted: December 24, 2016

Threat Metric

Threat Level: 5/10
Infected PCs: 66
First Seen: December 24, 2016
Last Seen: May 13, 2021
OS(es) Affected: Windows


Moosjs.cn is a fake search site that delivers results from other search engines and affiliates, which it may use to generate advertising revenue. Since malware researchers have connected this domain to non-consensual browser changes, Web surfers should be mindful of any unwanted changes promoting this site such as homepage hijackings or pop-ups. Closing your browser and scanning your PC with an appropriate anti-malware product is heavily encouraged for removing any associated symptoms.

Your Choice in Searches Reduced to One

The universal usefulness of search engines is, perhaps, rivaled only by the relative ease with which they can generate profit through sponsoring advertising and affiliate content. The authors of legally questionable software also take advantage of this side benefit, which malware experts' research demonstrates through sites like Moosjs.cn. The Moosjs.cn website, while lacking any direct flags for hosting threatening content, benefits from unwanted software forcing unrelated Web traffic towards it.

Moosjs.cn hijackings only became observable in late 2016, possibly in connection with holiday traffic. Despite the domain's use of a Chinese name suffix, Moosjs.cn hosts content designed for English speakers, including links to in-browser games and sponsored search results. Symptoms of a successful Moosjs.cn hijacking through the installation of disguised, unwanted or threatening software may include:

  • Moosjs.cn pop-ups may launch automatically on websites unaffiliated with it.
  • Your homepage's URL may lock itself to Moosjs.cn without providing any options for changing it.
  • Web searches may redirect you to Moosjs.cn automatically regardless of which site you use to input the search query.

This non-consensual traffic may give Moosjs.cn's owners revenue through the associated click-through activity. Various anonymity protocols are hindering any attempts to trace the identity of the domain's owner currently, which raises the likelihood of the Moosjs.cn website's exploitation for promoting potentially unsafe or illicit content.

Making Your Homepage Homely Again

Separate campaigns for Moosjs.cn's benefit are verifiable for both Chrome and Firefox browsers, with the closeness of their launch windows making it unlikely that the attacks are originating from different threat actors. Although malware analysts have yet to identify the application that's making these browser changes, they appear to be occurring without requesting any consent from the PC's logged-in user. Consent may be being disguised through a bundle installation process for free software or hidden in fake software updates.

Current scans of Moosjs.cn's content detect no threats, such as exploit kits or download links labeled inaccurately that could install threatening software deceptively. However, software taking control of your browser's basic usability settings can be responsible for other problems that degrade your overall Web-browsing security. Always close your browser and analyze your PC with a qualified anti-malware program after seeing any of the symptoms like those described previously in this article. Most anti-malware scans should detect a Moosjs.cn hijacker as a Potentially Unwanted Program (PUP).

No matter how safe your favorite brand of aWeb browser might seem to be, Moosjs.cn hijackings and similar attacks will continue targeting the users of any widely-used software. Your browser and PC's safety always should come before all else, particularly when you're considering surfing an unsafe site without any extra layers of protection.

Technical Details

Additional Information

The following URL's were detected:
moosjs.cn
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