Denis Sinegubko
Browsing Category
Sucuri Labs
333 posts
Massive Google Colaboratory Abuse: Gambling and Subscription Scam
This investigation started with a small and quite simple piece of PHP malware found on a hacked website. We located the following PHP code, responsible…
Backdoor Targets FreePBX Asterisk Management Portal
Krasimir Konov Written in PHP and JavaScript, FreePBX is a web-based open-source GUI that manages Asterisk, a voice over IP and telephony server. This open-source software allows…
SocGholish Malware: Script Injections, Domain Shadowing, IPs & Obfuscation Techniques
Earlier this June, we shared information about the ongoing NDSW/NDSX malware campaign which has been one of the most common website infections detected and cleaned…
Object Injection Vulnerability Affects WordPress Versions 3.7 to 5.7.1
Ben Martin If you haven’t updated your WordPress website since October 2013, this wouldn’t affect you, but we strongly hope that is not the case! There’s a…
Trojan Spyware and BEC Attacks
Luke Leal When it comes to an organization’s security, business email compromise (BEC) attacks are a big problem. One primary reason impacts are so significant is that…
SQL Triggers in Website Backdoors
Over the past year, there’s been an increasing trend of WordPress malware using SQL triggers to hide malicious SQL queries within compromised databases. These queries…
Whitespace Steganography Conceals Web Shell in PHP Malware
Last November, we wrote about how attackers are using JavaScript injections to load malicious code from legitimate CSS files. At first glance, these injections didn’t…
Phishing & Malspam with Leaf PHPMailer
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…
Magento PHP Injection Loads JavaScript Skimmer
A Magento website owner was concerned about malware and reached out to our team for assistance. Upon investigation, we found the website contained a PHP…
Critical Vulnerabilities in 123contactform-for-wordpress WordPress Plugin
Rodrigo Escobar In mass infection scenarios, our Malware Research team often looks for attack vectors to find patterns and other similarities among compromised websites. The identification of…
Real-Time Phishing Kit Targets Brazilian Central Bank
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…