Collaborate Disseminate
One of the themes commonly highlighted on this blog includes the many creative methods and techniques attackers employ to steal data from compromised websites. Credit card skimmers, credential and password hijackers, SQL injections, and even malware o… Continue reading Server Side Data Exfiltration via Telegram API
It’s common knowledge that attackers often use email as a delivery mechanism for their malicious activity — which can range from enticing victims to click a phishing URL or download a malicious attachment.
To support these activities, attackers seek o… Continue reading Phishing & Malspam with Leaf PHPMailer
We recently found an interesting phishing kit on a compromised website that has QR code capabilities, along with the ability to control the phishing page in real time. What our investigation revealed was that attackers were leveraging PIX, a new payme… Continue reading Real-Time Phishing Kit Targets Brazilian Central Bank
As vital assets for many business operations, websites and their hosting servers are often the target of ransomware attacks — and if they get taken offline, this can cause major issues for a business’ data, revenue, and ultimately reputation.
The wors… Continue reading Obfuscation Techniques in Ransomweb “Ransomware”
Identifying website backdoors is not always an easy task. Since a backdoors primary function is to conceal itself while providing unauthorized access, they are often developed using a variety of techniques that can make it challenging to detect.
For e… Continue reading Evaluating Cookies to Hide Backdoors
A client recently reported their customers were receiving antivirus warnings when trying to access and purchase products from a Magento ecommerce website. This is almost always a telltale sign that something is amiss, and so I began my investigation.
… Continue reading Bogus CSS Injection Leads to Stolen Credit Card Details
It’s not unusual to see website owners running things on a budget. Choosing a safe and reliable hosting company, buying a nice domain name, boosting posts on social media, and ranking on search engines — all this costs a lot of money. At the end of th… Continue reading SEO Spam Links in Nulled Plugins
Since April, our team has been tracking the spread of a PHP malware dropper. It’s impacting unsuspecting victims who thought they were downloading a mapping software to monitor the spread of the COVID-19 pandemic.
While the attack is likely spread thr… Continue reading Malware Dropper Takes Advantage of COVID-19 Pandemic
A few weeks ago, I was manually inspecting some files on a compromised website. While checking on a specific WooCommerce file, I noticed something interesting.
Among 246 other lines, this very specific part stood out to me:
$config = wp_dbase_config_i… Continue reading Fake WordPress Functions Conceal assert() Backdoor
Attackers are always trying to come up with new ways to evade detection from the wide range of security controls available for web applications. This also extends to malware like PHP shells, which are typically left on compromised websites as a backdo… Continue reading Obfuscation Techniques in MARIJUANA Shell “Bypass”