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Zemana Anti-Malware 2.0
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<blockquote data-quote="TwinHeadedEagle" data-source="post: 518580" data-attributes="member: 6533"><p>Certificate or digital certificate is another Windows component being used by some malware variants. Some malware variants use it to ensure undisturbed usage of their components.</p><p></p><p>Let's see how it works on some examples. This is one legitimate certificate:</p><p></p><p><img src="http://i64.tinypic.com/b7masj.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>As you can see there is a verified publisher for this file.</p><p></p><p>Malware authors use them in different ways. Obvious example is certificate that will allow their unsigned files to be run without any prompts.</p><p></p><p>Example of unwanted signature installed by malware:</p><p></p><p><img src="http://i63.tinypic.com/14syww7.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>This is one example of certificate usage. They can also be used to ensure your internet traffic is encrypted.</p><p></p><p>Some malware variants install <a href="http://www.telerik.com/fiddler" target="_blank">Fiddler</a> certificate in order to decrypt your internet traffic and in that way they can grab all kind of information they wouldn't be able usually. They can also use it to insert advertisements into your normal web experience.</p><p></p><p>Some certificated could be used to simply block execution of programs signed by defined Digital Signature like with this malware that blocks most popular antivirus products to be executed:</p><p></p><p><img src="http://i63.tinypic.com/2vxrerc.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Apropos this, you will get window similar to this one showing that this program cannot be run:</p><p></p><p><img src="http://i65.tinypic.com/25r01s0.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p></p><p>Zemana AntiMalware is detecting and removing unwanted certificated. So far we have been removing suspicious ones too, but now that option is optional. We will of course keep on improving this removal routine further.</p></blockquote><p></p>
[QUOTE="TwinHeadedEagle, post: 518580, member: 6533"] Certificate or digital certificate is another Windows component being used by some malware variants. Some malware variants use it to ensure undisturbed usage of their components. Let's see how it works on some examples. This is one legitimate certificate: [IMG]http://i64.tinypic.com/b7masj.png[/IMG] As you can see there is a verified publisher for this file. Malware authors use them in different ways. Obvious example is certificate that will allow their unsigned files to be run without any prompts. Example of unwanted signature installed by malware: [IMG]http://i63.tinypic.com/14syww7.png[/IMG] This is one example of certificate usage. They can also be used to ensure your internet traffic is encrypted. Some malware variants install [URL='http://www.telerik.com/fiddler']Fiddler[/URL] certificate in order to decrypt your internet traffic and in that way they can grab all kind of information they wouldn't be able usually. They can also use it to insert advertisements into your normal web experience. Some certificated could be used to simply block execution of programs signed by defined Digital Signature like with this malware that blocks most popular antivirus products to be executed: [IMG]http://i63.tinypic.com/2vxrerc.png[/IMG] Apropos this, you will get window similar to this one showing that this program cannot be run: [IMG]http://i65.tinypic.com/25r01s0.png[/IMG] Zemana AntiMalware is detecting and removing unwanted certificated. So far we have been removing suspicious ones too, but now that option is optional. We will of course keep on improving this removal routine further. [/QUOTE]
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