Posts Categorized: Threat Research


Spamvertised LinkedIn notifications serving client-side exploits and malware

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Cybercriminals are currently spamvertising LinkedIn themed messages, in an attempt to trick end and corporate users into clicking on the malicious links embedded in the emails. The campaign is using real names of LinkedIn users in an attempt to increase the authenticity of the spamvertised campaign. More details:

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Malicious USPS-themed emails circulating in the wild

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Cybercriminals are currently spamvertising malicious USPS-themed emails, that entice end and corporate users into clicking on malicious links found in the emails. More details:

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Spamvertised ‘Your tax return appeal is declined’ emails serving client-side exploits and malware

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Cybercriminals are currently spamvertising with IRS (Internal Revenue Service) themed emails, enticing end and corporate users into downloading and viewing a malicious .htm attachment. More details:

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Trojan Downloaders actively utilizing Dropbox for malware distribution

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By Curtis Fechner It’s never surprising to see the multitude of tactics a cybercriminal will use to deliver malware. In this case, I came across a collection of files masquerading as RealNetworks updater executables. These files were all located in a user’s %AppData%realupdate_ob directory, and the sizes were all quite consistent. At first glance there was nothing too special about this finding – malware appearing to be legitimate software is nothing new. When I looked into the specific behaviors of the file, it became clearer that the software is in fact malicious, and that it is actually downloading malicious files […]

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Spamvertised ‘Your accountant license can be revoked’ emails lead to client-side exploits and malware

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Cybercriminals are currently spamvertising a malicious email campaign that’s designed to trick you into clicking on a bogus complaint.pdf link which ultimately leads to client-side exploits and malware. The campaign is launched by the same gang that launched the “Spamvertised ‘Termination of your CPA license’ ” malicious campaign last month. More details:

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A peek inside the Darkness (Optima) DDoS Bot

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With politically motivated DDoS (distributed denial of service attack) attacks proliferating along with the overall increase in the supply of managed “DDoS for hire” services, it’s time to get back the basics, and find out just what makes an average DDoS bot used by cybercriminals successful. Continuing the “A peek inside…” series, in this post I’ll profile the Darkness X (Optima) DDoS bot, available for purchase at selected cybercrime-friendly online communities since 2009. More details:

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Evolution of Android Malware “The touch, the feel of being tricked into sending premium SMS messages, the worst feeling of our lives” (Part 3)

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by Nathan Collier Android.SMS.FakeInst is a Trojan that aims to do one thing — trick users into sending premium SMS messages by pretending to be an install for an app.  Here’s how the scam works: The user sends three premium SMS messages in exchange for an app, but there is no guarantee that it will actually install anything after they already have your money.  These malicious apps are getting harder and harder to discern as malicious as the look and feel of these apps get better through newer iterations.  One variant of these Trojan apps, which comes from a known malicious […]

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New service converts malware-infected hosts into anonymization proxies

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What happens when a host gets infected with malware? On the majority of occasions, cybercriminals will use it as a launch platform for numerous malicious activities, such as spamming, launching DDoS attacks, harvesting for fresh emails, and account logins. But most interestingly, thanks to the support offered in multiple malware loaders, they will convert the malware-infected hosts into anonymization proxies used by cybercriminals to cover their Web activities. In this post, I’ll profile a newly launched service, offering thousands of malware-infected hosts as Socks4 and Socks5 servers for anonymizing a cybercriminal’s Web activities.

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BlackHole exploit kits gets updated with new features

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According to independent sources, the author of the most popular web malware exploitation kit currently dominating the threat landscape, has recently issued yet another update to the latest version of the kit v1.2.2. More details:

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A peek inside the Elite Malware Loader

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Just like today’s modern economy, in the cybercrime ecosystem supply, too, meets demand on a regular basis. With malware coding for hire propositions increasing thanks to the expanding pool of talented programmers looking for ways to enter the cybercrime ecosystem, it shouldn’t be surprising that  cybercriminals are constantly releasing new malware loaders, cryptors, remote access trojans, or issuing updates to web malware exploitation kits on a periodic basis, using the outsourcing market model. Continuing the “Peek inside…” series, in this post I’ll profile the Elite Malware Loader. In the wild since 2009,  the malware loader is still under active development […]

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