A Trojan (Trojan horse) is a computer program which, camouflaged in the background, performs completely different functions or pursues motives.
By a Social Engineeringscam tricked the user into downloading and installing a program containing a Trojan horse. Activation gives cyber criminals the opportunity to spy on the user and obtain confidential data.
Malicious software is secretly installed as soon as the program is run, which then runs autonomously and independently. Deleting the Trojan program has no effect on the malicious program.
However, a Trojan does not necessarily have to be a malicious program. As soon as a program hides a non-obvious functionality that has no harmful effects, it is called a Trojan.
A backdoor Trojan gives the cybercriminal the ability to remotely infiltrate the infected device. The attacker aims to delete files, change settings and collect personal data.
These Trojans often hide in simple programs. The operating system is primarily affected after execution, as security gaps are sought in order to gain control of the system and access to personal data.
The intruder first gains access to the entire computer system in order to then encrypt all the data and demand a ransom in the form of bitcoins, for example, for the decryption.
With this Trojan, the cyber criminals use the resources of computers to send a flood of requests to various addresses in the network, thus overloading it.
These Trojans can remain in the system unnoticed. An antivirus program does not recognize that such a Trojan is present. The perpetrator has the opportunity to manipulate the operating system and gain administration rights.
The dropper is known to install other trojans or viruses. Some versions ensure that no malicious intentions are detected.
This Trojan is often found in dubious download sources. These Trojans can download additional software onto your computer. Most of the time, these are adware or some other unwanted program that can have fatal consequences for the computer.
This Trojan is often found in dubious download sources. These Trojans can download additional software onto your computer. Most of the time, these are adware or some other unwanted program that can have fatal consequences for the computer.
It is primarily the user who infects a system with a Trojan. Users fall for the tricks and deceptions of cyber criminals and assume they have useful software installed. Another danger is if the system is not properly patched to the current state. This creates a multitude of attack vectors.
Trojans often hide on websites that generally offer software. Many programs are uploaded to such platforms every day, so that a test tailored to each software can no longer be guaranteed. Accordingly, many programs are infected with Trojans that can infect the user's system.
Many social media platforms offer instant messaging services to communicate via chat function. Videos and pictures can be shared via such channels, whereby a link is sent to all of the user's contacts as soon as they are clicked on. After the link has been opened, the user unknowingly downloads a file that may contain a Trojan.
It is common for cyber criminals to send credible emails claiming to be from companies like Amazon or Paypal. These emails often contain pictures and videos, but usually also links. As soon as you open the file or a link, the Trojan can install itself in the system.
External service providers use specially developed software solutions to help determine the origin of the Trojan.
A Trojan horse can also infect an IT system in which it had previously installed itself via a worm or other worm Malware via so-called 0-days or via known security gaps, for example due to the lack of security updates.
In order to uncover possible weak points in your company, you should consult a professional Penetration test have it carried out. In the penetration test, your IT system is manually analyzed for weaknesses in order to show you where there is a need for action. It is important that not only the technology but also the human factor is taken into account.
