A Trojan horse or Trojan is a malicious code or program created by hackers to disguise as legitimate software to gain access to victim's systems. There are various sorts of Trojans viruses that are intended to erase, change, harm, block, or some other destructive action on your data or network.
Kinds of Trojans Viruses
Trojans viruses are grouped according to the kind of actions and what can perform on your computer. Probably the most widely recognized sorts of Trojans viruses are as per the following:
(1) Trojan: Backdoor
Backdoor is a popular sort of Trojan virus which makes a backdoor to permit a cyber attacker to remote access to your computer system.
It is a malicious program utilized by attackers to unapproved remote access of a computer system by exploiting system flaws and vulnerabilities. It works in the foundation and avoids the user and it is hard to recognize
It can do everything in your system, for example, sending, receiving, deleting files, and likewise rebooting the system.
Tips: To evacuate backdoor
- Install antivirus software on the computer and update it.
- Disconnect your computer from the Internet
- Reboot the computer
- Full scan your system using antivirus software
- Perform a System Restore
- Reconnect your computer to the Internet
(2) Trojan: Rootkit
A rootkit is a malicious program that installs and executes code on a system without user assent in request gain system access to a computer or network.
It is ordinarily installed by exploiting system vulnerabilities, social engineering strategies, and stolen passwords or phishing techniques without the victim's knowledge.
There are various kinds of Rootkit virus, for example, Bootkits, Firmware Rootkits, and Kernel-Level Rootkits.
Tips
It is hard to identify and expel rootkit malware on the grounds that the developers endeavor to conceal their malware content from users and administrators of the system.
Some rootkit malware can identify and evacuate using anti-malware, and a few sorts of rootkits malware are hard to distinguish and expel from the device.
On the off chance that it is unimaginable to expect to recognize and evacuate the rootkit, then reinstall the Operating System (operating system), which will eliminate the malware from your device.
(3) Trojan: Downloader
Downloader is a kind of Trojan virus that downloads and installs/execute at least one malicious program from the internet including Trojans and adware.
Its main objective is to download additional content from the internet, for example, additional bits of malware and install this malware onto the compromised computer.
It is a hurtful malware to the security of your personal or business information, for example, credit card numbers, account passwords, or important data and other financial data.
(4) Trojan: Ransomware
Ransomware is a sort of cybercrime which blocks to access the computer system and demands for bitcoin in request to access the system. The most perilous ransomware attacks are WannaCry, Petya, Cerber, Locky and CryptoLocker, and so forth.
It commonly installed in a computer through the following ways:
- When download and open a malicious email attachment
- Install an infected software or application
- User visit a vulnerable website
- Click on a suspicious web link or the image icon
(5) Trojan: Banker
Banker is a sort of malware programs which are intended to steal your financial data, for example, online banking systems, e-payment systems, and credit or debit cards.
Then this stolen data is sent over email, FTP, the web, or other methods to the malicious user controlling the Trojan
It can appear as a legitimate bit of software until it is installed on the computer. Once installed, then the Trojan horse can gain access to the computer system and steal important files and information.
(6) Trojan: Denial-of-service (DOS) Attack
A Denial-of-Service is an attack that shut down a machine or network and making it inaccessible to the users. It regularly flooding a focused on a system with requests until ordinary traffic can't be processed, resulting in denial-of-service attacks to users.
It happens when an attacker keeps legitimate users from accessing explicit assets, devices, or other network systems.
(7) Trojan: Exploit
Exploit is a kind of Trojan virus that contains a malicious code or content to attack weak software or application. It is obscure security gaps or weakness in computer software or application in the software improvement process.
It is either patch that has not been discharged or the application developers were unconscious of or didn't have adequate time to fix the weakness. They are grouped according to the sort of weakness, for example, zero-day, DoS, spoofing and Cross-Site Scripting (XSS).
Be that as it may, in the event that the weakness isn't illuminated by the engineer, then it can impact on computer programs, data, or a network. That's the reason it is important to consistently update your software and install security patches discharged by your software's designer.
(8) Trojan: Spy
Trojan Government operative is software programs which used to keep an eye on how you're using your computer and what you are performing with computer. Keylogger is a kind of spying technology that recording user keystrokes to steal passwords and other sensitive information.
It can track data entered by keyboard, make screenshots, record instant messages, email, and catch some other information whenever using a keyboard. Keylogger software installed on a computer system and has the ability to record each keystroke made on that system.
The information is then communicated over email, FTP, the web, or other methods to the malicious user controlling the Trojan.
(9) Trojan: Mailfinder
Mailfinder is another kind of Trojans viruses that are intended to collecting email addresses from a victim's computer and send them to the malicious user by means of email, web, FTP, or other methods.
(10) Trojan: Fake Antivirus (Fake AV)
Fake Antivirus is malicious programs that intentionally distort the security status of a computer and carry on like antivirus software.
These malicious programs endeavor to convince the victim to buy the software in request to expel malware or security risks from the victim's computer.
Some Fake Antivirus has intended to disrupt the exercises of the user until the software is bought.
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(11) Trojan: Infostealer
Infostealer is a sort of Trojan horse program that gathers private information, for example, login subtleties, credentials, and financial information from the victim's computer and sends it to a predetermined area for sale on the black market.
Its main goal is to steal sensitive information from the infected computer.
(12) Trojan: Remote Access Trojan (Rodent)
A remote access Trojan (Rodent) is a malicious program utilized by the attacker to take unlimited oversight by means of a remote network association of the victim's computer for the reason for performing different malicious exercises. A Remote Access steals your sensitive information or spying on your exercises.
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