In my last blog post about a week ago, I talked about how Cryptolocker and the like are not dead and we will continue to see more of them in action. It’s a successful “business model” and I don’t see it going away anytime soon. Not even a few days after my post a new encrypting ransomware emerged. This one even targets Russians! Presenting Critroni (aka. Onion) This newest edition of encrypting ransomware uses the same tactics of contemporary variants including: paying through anonymous tor, using Bitcoin as the currency, changing the background, dropping instructions in common directories on how to pay the scam. […]
Posts Categorized: Backdoors
It was brought to our attention that the research published had flaws. To read our response, please click here: https://community.webroot.com/t5/Security-Industry-News/Update-to-the-Target-breach-theory/m-p/77825
It’s that time of the year! The moment when we reflect back on the cybercrime tactics, techniques and procedures (TTPs) that shaped 2013, in order to constructively speculate on what’s to come for 2014 in terms of fraudulent and malicious campaigns, orchestrated by opportunistic cybercriminal adversaries across the globe. Throughout 2013, we continued to observe and profile TTPs, which were crucial for the success, profitability and growth of the cybercrime ecosystem internationally, such as, for instance, widespread proliferation of the campaigns, professionalism and the implementation of basic business/economic/marketing concepts, improved QA (Quality Assurance), vertical integration in an attempt to occupy […]
By Cameron Palan and Nathan Collier Recently, we discovered a new malicious Android application called Android.MouaBot. This malicious software is a bot contained within another basic app; in this case, a Chinese calculator application. Behind the scenes, it automatically sends an SMS message to an auto-reply number which replies back to the phone with a set of commands/keywords. This message is then parsed and the various plugins within the malicious packages are run or enabled.
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 […]
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:
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.
Remember the “Spamvertised ‘DHL Package delivery report’ emails serving malware” campaign profiled earlier this month? It seems that another cybercrime gang has started impersonating DHL in an attempt to serve malware to the millions of spamvertised end and corporate users. More details:
Think you received a package? Think again. Cybercriminals are currently spamvertising millions of emails impersonating UPS (United Parcel Service) in an attempt to trick users into downloading the viewing the malicious .html attachment. More details:
The Electronic Frontier Foundation (EFF) is reporting on a recently intercepted malicious documents distributed over Skype, apparently targeting Syrian activists. Upon viewing the document, it drops additional files on the infected hosts, and opens a backdoor allowing the cyber spies behind the campaign access to the infected PC. Webroot has obtained a copy of the malware and analyzed its malicious payload. More details: