Posts Categorized: Uncategorized


DIY malicious Android APK generating ‘sensitive information stealer’ spotted in the wild

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Back in June, 2013, we offered a peek inside a DIY Android .apk decompiler/injector that was not only capable of ‘binding’ malicious Android malware to virtually any legitimate app, but also, was developed to work exclusively with a publicly obtainable Android-based trojan horse. In this post, I’ll profile a similar, recently released cybercrime-friendly Windows-based tool that’s capable of generating malicious ‘sensitive information stealing’ Android .apk apps, emphasize on its core features, and most importantly, discuss in depth the implications this type of tool could have on the overall state of the Android malware market. More details:

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Changes to the Webroot ThreatBlog

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Over the next few days, you will begin to see some changes to the Webroot ThreatBlog.  As the company has grown, so has the need for our threat research to be delivered in a clearer, more concise manner.  We have worked long and hard on the new blog, including adding new content like the ThreatVlog, as well as highlighting the individuals behind all the great threat research done here at Webroot. So with all that, we want to welcome you to the brand new Webroot ThreatVlog.  It is more than a URL update, but a whole new look to help you […]

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New ‘Hacked shells as a service’ empowers cybercriminals with access to high page rank-ed Web sites

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Whether it’s abusing the ‘Long Tail’ of the Web by systematically and efficiently exploiting tens of thousands of legitimate Web sites, or the quest to compromise few, but high-trafficked, high page rank empowered Web sites, compromised shell accounts are an inseparable part of the cybercrime ecosystem. Aiming to fill in a niche in the market segment for compromised/hacked shells, a newly launched service is offering a self-service type of underground market proposition, whose inventory is currently listing over 6000 compromised/hacked shells internationally. More details:

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New Rogue “Antivirus System” locks you out of safe mode

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By Tyler Moffitt Recently we’ve seen a new fake security product running around that has made improvements to the standard rogue. Typical rogues are annoying, but relatively easy to take care of. Previously, all you had to do was boot into safe mode with networking and remove the files and registry entries (or install Webroot). Support forums everywhere use safe mode with networking as the “go to” mode for virus removal as non-core components are not loaded at start up and it’s easier to isolate problems. In the vast majority of the rogues we see, they are not loaded in […]

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“The implications are huge!” – The Master Key Bug *UPDATED*

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By Nathan Collier and Cameron Palan Last week, Bluebox Security reported they’d found a new flaw with the Android OS, saying “The implications are huge!”. The bug, also known as the “Master Key” bug or “bug 8219321”, can be exploited as a way to modify Android application files, specifically the code within them, without breaking the cryptographic signature. We call these signatures the “digital certificate”, and they are used to verify the app’s integrity. Since the bug is able to modify an application and still have the certificate appear valid, it is a big deal.

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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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Top 5 Fake Security Rogues of 2013

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By Tyler Moffitt We see users on the internet getting infected with Rogue Security Malware all the time. In fact, it’s one of the most common and obvious type of infections we see. The Rogues lock-down your computer and prevent you from opening any applications so you’re forced to read their scam. Although they use various tactics and convincing GUIs to get onto your computer, they all share a common goal: To get your money.

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Adobe Flash spoof leads to infectious audio ads

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By Tyler Moffitt We’ve seen quite a few audio ads infecting users recently. We think it’s a good idea to go over an in-depth look at how they infect your computer and how to remediation them. As you can see in this first picture, this is another Adobe Flash spoof that launches its signature update window. You might not be able to see, but the “f” is a little off on the tiny icon at the top left. Either way it looks quite legitimate. It doesn’t matter what option you check; once you click “NEXT” you’ll get this next window. […]

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