Posts Categorized: Trojans


Android malware spreads through compromised legitimate Web sites

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Over the past 24 hours, our sensor networks picked up an interesting website infection affecting a popular Bulgarian website for branded watches, which ultimately redirects and downloads premium rate SMS Android malware on the visiting user devices. The affected Bulgarian website is only the tip of the iceberg, based on the diversified portfolio of malicious domains known to have been launched by the same party that launched the original campaign. More details:

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Leaked DIY malware generating tool spotted in the wild

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How easy is it to create an undetected piece of malware these days? Too easy to be true! With more DIY malware botnets and DIY malware generating tools continuing to leak at public cybercrime-friendly forums, today’s novice cybercriminals have access to sophisticated point’n’click malware generating tools that were once only available in the arsenal of the experienced cybercriminal. In this post, I’ll profile a recently leaked DIY malware generating tool, discuss its core features, and emphasize on its relevance in the context of the big picture when it comes to ongoing waves of malicious activity we’ve been monitoring over the […]

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Malicious DIY Java applet distribution platforms going mainstream

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Despite the fact that on the majority of occasions cybercriminals tend to rely on efficient and automated exploitation techniques like the ones utilized by the market leading Black Hole Exploit Kit, they are no strangers to good old fashioned ‘visual social engineering’ tricks. Throughout 2012, we emphasized on the emerging trend of using malicious DIY Java applet distribution tools for use in targeted attacks, or widespread campaigns. Is this still an emerging trend? Let’s find out. In this post, I’ll profile one of the most recently released DIY Java applet distribution platforms, both version 1.0 and version 2.0. More details:

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Fake ‘You have made an Ebay purchase’ themed emails lead to client-side exploits and malware

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Over the past 24 hours, cybercriminals have launched yet another massive spam campaign, this time impersonating both eBay and PayPal, in an attempt to trick their users into clicking on the client-side exploits and malware serving links found in the malicious emails. More details:

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Webroot’s Threat Blog Most Popular Posts for 2012

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It’s that time of the year! The moment when we look back, and reflect on Webroot’s Threat Blog most popular content for 2012. Which are this year’s most popular posts? What distinguished them from the rest of the analyses published on a daily basis, throughout the entire year? Let’s find out.

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Fake Chase ‘Merchant Billing Statement’ themed emails lead to malware

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Cybercriminals are currently mass mailing tens of thousands of emails, impersonating Chase in an attempt to trick its customers into executing the malicious attachment found in the fake email. Upon execution, the sample downloads additional malware on the affected hosts, and opens a backdoor allowing the cybercriminals behind the campaign complete access to the host. More details:

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Bogus ‘Facebook Account Cancellation Request’ themed emails serve client-side exploits and malware

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Facebook users, watch what you click on! Cybercriminals are currently mass mailing bogus “Facebook Account Cancellation Requests“, in an attempt to trick Facebook’s users into clicking on the malicious link found in the email. Upon clicking on the link, users are exposed to client-side exploits which ultimately drop malware on the affected host. More details:

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Bogus ‘End of August Invoices’ themed emails serve malware and client-side exploits

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Cybercriminals have recently launched yet another massive spam campaign attempting to trick users into clicking on malicious links or executing malicious attachments found in the spamvertised emails. More details:

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Bogus ‘Intuit Software Order Confirmations’ lead to Black Hole Exploit Kit

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Sticking to their well proven practice of systematically rotating impersonated brands, the cybercriminals behind a huge majority of the malicious campaigns that we’ve been profiling recently are once again impersonating Intuit in an attempt to trick its customers into clicking on links exposing them to the client-side exploits served by the Black Hole Exploit Kit. More details:

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Bogus ‘Meeting Reminder” themed emails serve malware

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Cybercriminals are mass mailing malicious emails about a meeting you wouldn’t want to attend – unless you want to compromise the integrity of your computer. Once executed, the malicious attachment opens a backdoor on the affected host, allowing the cybercriminals behind the campaign to gain complete access to the affected host. Naturally, we’ve been monitoring their operations for quite some time, and are easily able to identify multiple connections between their previously launched campaigns. More details:

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