Posts Tagged: security


Rogue ads targeting German users lead to Win32/InstallBrain PUA (Potentially Unwanted Application)

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German Web users, watch what you install on your PCs! Our sensors just picked up yet another rogue/deceptive ad campaign enticing visitors to install the bogus PC performance enhancing software known as ‘PCPerformer’, which in reality is a Potentially Unwanted Application (PUA), that tricks users into installing (the Delta Toolbar in particular) on their PCs. More details:

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New commercially available Web-based WordPress/Joomla brute-forcing tool spotted in the wild

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Thanks to the fact that users not only continue to use weak passwords, but also, re-use them across multiple Web properties, brute-forcing continues to be an effective tactic in the arsenal of every cybercriminal. With more malicious underground market releases continuing to utilize this technique in an attempt to empower potential cybercriminals with the necessary tools to achieve their objectives, several questions worth discussing emerge in the broader context of trends and fads within the cybercrime ecosystem. What’s the current state of the brute-forcing attack concept? Is it still a relevant attack technique, or have cybercriminals already found more efficient, evasive […]

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Spamvertised ‘Vodafone U.K MMS ID/Fake Sage 50 Payroll’ themed emails lead to (identical) malware

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We’ve intercepted two, currently circulating, malicious spam campaigns enticing users into executing the malicious attachments found in the fake emails. This time the campaigns are impersonating Vodafone U.K or pretending to be a legitimate email generated by Sage 50′s Payroll software. More details:

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Fake ‘iGO4 Private Car Insurance Policy Amendment Certificate’ themed emails lead to malware

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In a clear demonstration of low QA (Quality Assurance) applied to an ongoing malicious spam campaign, the cybercriminals behind the recently profiled ‘Cybercriminals spamvertise tens of thousands of fake ‘Your Booking Reservation at Westminster Hotel’ themed emails, serve malware‘ campaign, have launched yet another spam campaign. Despite the newly introduced themed attempting to trick users into thinking that they’ve received a ‘iGO4 Private Car Insurance Policy Amendment Certificate‘, the cybercriminals behind it didn’t change the malicious binary from the previous campaign. More details:

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New commercially available mass FTP-based proxy-supporting doorway/malicious script uploading application spotted in the wild

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For many years now, cybercriminals have been efficiency abusing both legitimate compromised and automatically registered FTP accounts (using CAPTCHA outsourcing) in an attempt to monetize the process by uploading cybercrime-friendly ‘doorways’ or plain simple malicious scripts to be used later on in their campaigns. This practice led to the emergence of DIY (do-it-yourself) tools and managed service platforms that allow virtually anyone to start monetizing these fraudulently or automatically registered accounting data, signaling a trend towards an efficiency-driven cybercrime ecosystem – a concept that’s been materializing on a daily basis for a couple of years. In this post, I’ll profile a desktop-based tool that allows cybercriminals […]

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Cybercriminals spamvertise tens of thousands of fake ‘Your Booking Reservation at Westminster Hotel’ themed emails, serve malware

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By Dancho Danchev Cybercriminals are currently mass mailing tens of thousands of fake emails impersonating the Westminster Hotel, in an attempt to trick users into thinking that they’ve received a legitimate booking confirmation. In reality through, once the socially engineered users execute the malicious attachments, their PCs automatically join the botnet operated by the cybercriminals behind the campaign. More details:

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Spamvertised ‘Export License/Invoice Copy’ themed emails lead to malware

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By Dancho Danchev We’ve just intercepted a currently circulating malicious spam campaign consisting of tens of thousands of fake ‘Export License/Invoice Copy’ themed emails, enticing users into executing the malicious attachment. Once the socially engineered users do so, their PCs automatically become part of the botnet operated by the cybercriminals behind the campaign. More details:

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Novel ransomware tactic locks users’ PCs, demands that they participate in a survey to get the unlock code

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By Dancho Danchev From managed ransomware as a service ‘solutions‘ to DIY ransomware generating tools, this malicious market segment is as hot as ever with cybercriminals continuing to push new variants, and sometimes, literally introducing novel approaches to monetize locked PCs. In this case, by forcing their users to complete a survey before they receive the unlock code. More details:

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Android.Bankun: Bank Information Stealing Application On Your Android Device

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By Nathan Collier There’s one variant of Android.Bankun that is particularly interesting to me.  When you look at the manifest it doesn’t have even one permission.  Even wallpaper apps have internet permissions.  Having no permissions isn’t a red flag for being malicious though.  In fact, it may even make you lean towards it being legitimate. There is one thing that thing that gives Android.Bankun a red flag though.  The package name of com.google.bankun instantly makes me think something is fishy.  To the average user the word ‘Google’ is seen as a word to be trusted.  This is especially true when […]

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Cybercriminals experiment with Tor-based C&C, ring-3-rootkit empowered, SPDY form grabbing malware bot

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By Dancho Danchev Keeping in pace with the latest and most widely integrated technologies, with the idea to abuse them in a fraudulent/malicious way, is an everyday reality in today’s cybercrime ecosystem that continues to be over-supplied with modified and commoditized malicious software. This is achieved primarily through either leaked source code or a slightly different set of ‘common’ malware ‘features’ branded under a different name. What are cybercriminals up to in terms of experimenting with command and control infrastructure? How are they responding to the introduction of new protocols such as, for instance, SPDY, embedded deep into the most popular Internet browsers? Let’s find out. […]

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