GXHLGSL.txt file uploader botnet –Discovered by BitNinja FtpCaptcha
Eniko Toth

GXHLGSL.txt file uploader botnet –Discovered by BitNinja FtpCaptcha

At the beginning of the year we released our brand-new FtpCaptcha module, and of course, we were so excited about receiving the first incidents. However, we didn’t think that the very first logs will be such eye-catching. We detected a not so well-known botnet, and we didn’t find an article about it (only a few forum topics), so we summarized everything that you need to know about it. Test the ability to upload a file This botnet is trying to upload a file named GXHLGSL.txt, which contains only this: TEST. If it was a vulnerability scanner, there would provide some description about it o...
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Botnet renewal – Here is the February botnet
Eniko Toth

Botnet renewal – Here is the February botnet

Do you remember the new version of the Hello Peppa botnet? At the end of 2018, it was welcomed into 2019 slightly early, and the January botnet started to spread. Well, it wouldn’t be funny, if the botnet would still send the „J4nur4ry” in the Post Data when we are already over January… So, here is the February botnet! Despite the January botnet, this one was accurate and started on 1st February. The pike was on the next day, as you can see it from the chart below.   After that, it looked like it moved back, but on 17th Feb there was another pike. Let’s look closely to o...
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2018: The Year in Review at BitNinja
Boglarka Angalet

2018: The Year in Review at BitNinja

As we look back now, it is amazing to remember all the things we achieved together and all the threats BitNinja saved us from since the start of the year.  Here’s a five minute summary of what we have been up to in 2018.  Hacker-free new year to everyone! See you in 2019! Thank you for an amazing 2018! First of all, we’d like to say thank you for your engagement and support all around the year. You inspire us to achieve the best security solution available, to develop our community and to deepen our knowledge of every aspect of cybersecurity.  Thanks...
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Using server security scanners besides BitNinja: consequences, solutions
József Pálfi

Using server security scanners besides BitNinja: consequences, solutions

There are tons of paid/free cloud-based solutions or standalone applications available over the internet that allow the user to check a system’s security level. Depending on the need, people can choose from simple nmap through “blackbox” security assessment tools to a wide range of heavy-weight penetration testing tools. Our approach Here at BitNinja we think that security testing is the given organization’s responsibility. They should create a security-testing strategy and keep it up to date (often with help of an external partner, but it is very important that this is with the responsi...
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New LogAnalysis with 109x speed
Nikolett Hegedüs

New LogAnalysis with 109x speed

New LogAnalysis with 109x speed The former version of SenseLog (which serves our robust LogAnalysis module) has processed the files at the start and observed them if there were any changes in them. It has used a lot of sources for the dates in the log rows. In this version it was necessary because SenseLog had to recognize the changes and had to decide whether it has to to something or not with the changes. The process of log files took longer time because of this. The current version only processing the changes, in the case of delegated logs, SenseLog stands at the end. This way therer...
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Which are the most scanned ports?
Eniko Toth

Which are the most scanned ports?

What is a port? Ever since computers are able to run more programs at the same time and can connect to modern networks, ports became important. 3 things are needed for the communication between two machines: IP address of the host Port number Type of protocol (e.g. TCP, UDP) A port number is a 16-bit number between 0 and 65535. There are some specific ports which identify some exact services, e.g. port 80 is used for HTTP communication. Types of ports: Well Known Ports: 0 - 1023 Registered Ports: 1024 - 49151 Dynamic/Private : 49152 - 65535 W...
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SQL injection examined 2/2 –Testing your apps against vulnerabilities
Ferenc Barta

SQL injection examined 2/2 –Testing your apps against vulnerabilities

In the previous part of the article, we had looked at some incidents to better understand how attackers try to find SQL injection vulnerabilities. Instead of looking for other incidents, I’ve decided to write a short introduction about testing your own application using publicly available automatic tools. Constantly searching for vulnerabilities on your web applications and services is vital. Most of the time, such systems are exposed to the Internet and it is certain that sooner or later, someone will try to exploit their vulnerabilities. Environment We’ll use a popular too...
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The most common CMS attack types
Daniel Mecsei

The most common CMS attack types

Nowadays, the Internet plays a huge part in our lives. It gets bigger and bigger every day, now it has more than one billion websites. Most of these sites are built with CMS which stands for Content Management System. It is a tool that provides an easy-to-use method for users without any programming skills in creating websites. The most common CMSs are written in PHP because most shared-hosting providers only provide this way to share/operate your website with the community. According to the statistics, WordPress has the largest market share with 52%, followed by Joomla with only 6%. The...
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What should you know about honeypots and proactive threat detection?
Nikolett Hegedüs

What should you know about honeypots and proactive threat detection?

Honeypots are a form of proactive threat detections. Proactive threat detection is the next step in improving an organization’s security posture. It has many significant advantages e.g. it provides information about the different kinds of threats attacking the organization and the possible vulnerabilities. It works like a trap A honeypot is a monitored resource that serves as a trap or a decoy against an attack or a threat. It is a security tool that helps to prevent, detect and to gather information about IT security issues. It prevents the threat from compromising its intende...
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Ransomware: what is it and why is it dangerous?
Nikolett Hegedüs

Ransomware: what is it and why is it dangerous?

Nikolett Hegedüs
Let’s start with the definition. Ransomware is a kind of malware that installs itself onto an unprotected computer, encrypts some files, and asks for a certain amount of money for decryption or to not publish certain sensitive information online. It is called a denial-of-access attack and it can be very frustrating because you know that the files are there but you can’t access them.   There are two types of ransomware attacks: Simple ransomware or lockscreen, where the system is locked. The attack is more serious if the files are really encrypted. It is called a file co...
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