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Sucuri Labs

Backdoor Targets FreePBX Asterisk Management Portal

December 15, 2022Krasimir Konov

Backdoor Targets FreePBX Asterisk Management Portal 

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 users to build customer phone systems. During a recent investigation, I came across a simple piece of malware targeting FreePBX’s…

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SocGholish and NDSW NDSX malware, FakeUpdates, SilverFish (SolarWind) and ransomware

August 16, 2022Denis Sinegubko

SocGholish: 5+ Years of Massive Website Infections

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 by our remediation team in…

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WordPress Vulnerablity Disclosre

May 17, 2021Ben Martin

Object Injection Vulnerability Affects WordPress Versions 3.7 to 5.7.1

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 new object injection vulnerability which…

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Trojan Spyware and BEC Attacks

March 3, 2021Luke Leal

Trojan Spyware and BEC Attacks

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 attacks often use a human…

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Backdoor SQL Trigger

February 25, 2021Luke Leal

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 inject an admin level user…

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Backdoors in Malicious Plugins

February 2, 2021Denis Sinegubko

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 appear to contain anything except…

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Phishing Campaign

January 26, 2021Luke Leal

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 a phishing URL or download…

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Labs Note

January 21, 2021Luke Leal

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 injection in one of the…

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WordPress Vulnerability

January 19, 2021Rodrigo Escobar

Critical Vulnerabilities in 123contactform-for-wordpress WordPress Plugin

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 these patterns allows us to…

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Phishing Campaign

January 14, 2021Luke Leal

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 in real time. What our…

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Troldesh Ransomware Dropper

January 12, 2021Luke Leal

Obfuscation Techniques in Ransomweb “Ransomware”

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…

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