Posts Categorized: Trojans


How fraudulent blackhat SEO monetizers apply Quality Assurance (QA) to their DIY doorway generators

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How are cybercriminals most commonly abusing legitimate Web traffic? On the majority of occasions, some will either directly embed malicious iFrames on as many legitimate Web sites as possible, target server farms and the thousands of customers that they offer services to, or generate and upload invisible doorways on legitimate, high pagerank-ed Web properties, in an attempt to monetize the hijacked search traffic. In this post I’ll profile a DIY blackhat SEO doorway generator, that surprisingly, has a built-in module allowing the cybercriminal using it to detect and remove 21 known Web backdoors (shells) from the legitimate Web site about to be abused, just in case […]

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A peek inside a (cracked) commercially available RAT (Remote Access Tool)

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By Dancho Danchev In an attempt to add an additional layer of legitimacy to their malicious software, cybercriminals sometimes simply reposition them as Remote Access Tools, also known as R.A.Ts. What they seem to be forgetting is that, no legitimate Remote Access Tool would posses any spreading capabilities, plus, has the capacity to handle tens of thousands of hosts at the same time, or possesses built-in password stealing capabilities. Pitched by its author as a Remote Access Tool, the DIY (do it yourself) malware that I’ll profile in this post is currently cracked, and available for both novice, and experienced cybercriminals to take […]

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BitCoin Jackers Ask: “What’s in Your Wallet?”

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By Adam McNeil With all the recent media coverage and extreme changes of the BitCoin value, it should come as no surprise that malware authors are trying to capitalize on the trends.  These people attempt to make money on all sorts of digital transactions and it’s probably a safe bet to expect their rapid expansion into the up-and-coming Digital Currency market. The Webroot Threat Research Department has already seen many malware campaigns targeting BitCoin users.  The recent explosion (and subsequent implosion) of the BitCoin value has expedited the need for custom compiled BitCoin harvesters and the malware authors are happy […]

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Malware propagates through localized Facebook Wall posts

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We’ve recently intercepted a localized — to Bulgarian — malware campaign, that’s propagating through Facebook Wall posts. Basically, a malware-infected user would unknowingly post a link+enticing message, in this case “Check it out!“, on their friend’s Walls, in an attempt to abuse their trusted relationship and provoke them to click on the malicious link. Once users click on the link, they’re exposed to the malicious software. More details:

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Android security tips and Windows AutoRun protection

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by Armando Orozco Recently, two applications designed with malicious intent were discovered within the Google Play application store.  The apps were built with a façade of being utility cleaners designed to help optimize Android-powered phones, but in reality, both apps had code built in designed to copy private files, including photos, and submit them to remote servers. The applications, named SuperClean and DroidClean, did not stop there. Researchers also found that the malware was able to AutoRun on Windows PC devices when the phones were paired, and infect the main computer.  The malware was designed to record audio through the […]

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Fake ‘FedEx Online Billing – Invoice Prepared to be Paid’ themed emails lead to Black Hole Exploit Kit

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Users of FedEx’s Online Billing service, watch out! Cybercriminals are currently mass mailing tens of thousands of emails impersonating the company, in an attempt to trick its customers into clicking on exploits and malware dropping links found in the legitimate-looking emails. More details:

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Fake Intuit ‘Direct Deposit Service Informer’ themed emails lead to Black Hole Exploit Kit

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Cybercriminals are currently spamvertising tens of thousands of fake emails, impersonating Intuit, in an attempt to trick its customers and users into clicking on the malicious links found in the emails. Once users click on any of the links, they’re exposed to the client-side exploits served by the latest version of the Black Hole Exploit Kit, which ultimately drops malware on the affected hosts. More details:

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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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