Recently in the news we saw FireEye and Fox-IT provide the ability to decrypt files encrypted by older crpytolocker variants. They used the command and control servers seized by the FBI during operation Tovar. Since they have access to those RSA keys they essentially have the password required for every single file encrypted by a Cryptolocker variant that used Evgeniy Bogachev’s botnet. That is a major portion of the traditional red GUI cryptolocker that became famous. Any previous victims from these variants that still have encrypted files left on their machine should be able to decrypt them with ease. All they have to do is […]
Posts Categorized: mal-effects
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. […]
Cybercriminals continue to efficiently populate their botnets, through the systematic and persistent spamvertising of tens of thousands of fake emails, for the purpose of socially engineering gullible end users into executing the malicious attachments found in the rogue emails. We’ve recently intercepted a currently circulating malicious campaign, impersonating Barkeley Futures Limited, tricking users into thinking that they’ve received a legitimate “Customer Daily Statement”.
Cybercriminals continue spamvertising tens of thousands of malicious emails on their way to socially engineer gullible end users, ultimately increasing their botnet’s infected population through the systematic and persistent rotation of popular brands. We’ve recently intercepted a currently circulating malicious campaign enticing users into executing the fake attachment. More details:
Despite the prevalence of Web based client-side exploitation tools as the cybercrime ecosystem’s primary infection vector, in a series of blog posts, we’ve been emphasizing on the emergence of managed/hosted/DIY malicious Java applet generating tools/platforms, highlighting the existence of a growing market segment relying on ‘visual social engineering’ vectors for the purpose of tricking end users into executing malicious/rogue/fake Java applets, ultimately joining a cybercriminal’s botnet. We’ve recently spotted yet another Web based Java drive-by generating tool, and decided to take a peek inside the malicious infrastructure supporting it.
In a cybercrime ecosystem dominated by DIY (do-it-yourself) malware/botnet generating releases, populating multiple market segments on a systematic basis, cybercriminals continue seeking new ways to acquire and efficiently monetize fraudulently obtained accounting data, for the purpose of achieving a positive ROI (Return on Investment) on their fraudulent operations. In a series of blog posts, we’ve been detailing the existence of commercially available server-based malicious script/iframe injecting/embedding releases/platforms utilizing legitimate infrastructure for the purpose of hijacking legitimate traffic, ultimately infecting tens of thousands of legitimate users. We’ve recently spotted a long-run Web-based managed malicious/iframe injecting/embedding service relying on compromised accounting data for legitimate traffic acquisition […]
Relying on the systematic and persistent spamvertising of tens of thousands of fake emails, as well as the impersonation of popular brands for the purpose of socially engineering gullible users into downloading and executing malicious attachments found in these emails, cybercriminals continue populating their botnets. We’ve recently intercepted a currently circulating malicious campaign, impersonating JJ Black Consultancy. More details:
PayPal users, watch what you click on! We’ve recently intercepted a currently circulating malicious spamvertised campaign which is impersonating PayPal in an attempt to trick socially engineered end users into clicking on the malware-serving links found in the emails. More details: Sample screenshot of the spamvertised email:
Cybercriminals continue to systematically release DIY (do-it-yourself) type of cybercrime-friendly offerings, in an effort to achieve a ‘malicious economies of scale’ type of fraudulent model, which is a concept that directly intersects with our ‘Cybercrime Trends – 2013‘ observations. We’ve recently spotted yet another subscription-based, DIY keylogging based botnet/malware generating tool. Let’s take a peek inside its Web based interface, and expose the cybercrime-friendly infrastructure behind it. More details:
Cybercriminals continue populating their botnets through the persistent spamvertising of tens of thousands of legitimately looking malicious emails, impersonating popular brands, in an attempt to trick socially engineered users into clicking on the malicious links found within the emails. We’ve recently intercepted an actively circulating spamvertised campaign which is impersonating HM’s Revenue & Customs Department and enticing users into clicking on the malware-serving links found in the emails. More details: