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Published Jul 28, 2012 | Updated Sep 15, 2017

Trojan:JS/Iframe.BS

Detected by Microsoft Defender Antivirus

Aliases: JS.IFrame.298 (Dr.Web) JS/IFrame.MS (Avira) JS/IFrame.QD (Command) Trojan.IframeRef (Ikarus) Trojan.JS.Iframe.BRR (BitDefender)

Summary

Trojan:JS/Iframe.BS is a detection for a trojan that redirects your browser to other sites. These sites may attempt to download and install malware onto your computer, often by exploiting software vulnerabilities.

Make sure you install all available updates for your computer to help prevent the downloading of additional malware. For more information on updating software, including Java, Adobe and Microsoft products, please see the Additional information section in this entry.

This trojan is a malicious JavaScript file that creates a hidden IFrame. The JavaScript file is embedded into compromised webpages, usually via SQL injection or through Blackhat search engine optimization (SEO) poisoning.

To detect and remove this threat and other malicious software that may be installed on your computer, run a full-system scan with an appropriate, up-to-date, security solution. The following Microsoft products detect and remove this threat:

Additional removal instructions

This threat may be present in your Temporary Internet Files folder. We recommend that you delete your temporary Internet files to prevent the persistent detection of this threat from within the Temporary Internet Files folder.

To delete the temporary Internet files from Internet Explorer, refer to KB Article 260897.

Update vulnerable applications

This threat may exploit software vulnerabilities. After removing this threat, make sure that you install the updates available from the vendor. For more information on updating software that is commonly targeted by malware, please see the following links:

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