Malware is a huge threat in the digital world, causing damage and financial loss. Discover 7 new and tricky types of malware and how cybercriminal tactics are evolving with technology.
7 New and Tricky Types of Malware Threats to Watch Out For
Malware keeps getting more complex and harder to detect. Here are seven new and tricky types of malware that you should know about:
1. Polymorphic Malware
Polymorphic malware is a type of malware that changes its code every time it replicates. This makes it difficult for antivirus software to detect because it appears different each time. Polymorphic malware uses an encryption key to alter its shape and signature. It combines a mutation engine with self-propagating code to continuously change its appearance and rapidly morph its code. This malware consists of two main components: an encrypted virus body and a virus decryption routine. The virus body changes its shape, while the decryption routine remains constant, and the other part is decrypted and re-encrypted. This makes it easier to detect polymorphic malware compared to metamorphic malware, but it can still evolve into a new version quickly before anti-malware detects it. Criminals use obfuscation techniques to create polymorphic malware. These include: · dead-code insertion · subroutine reordering · register reassignment · instruction substitution · code transposition · code integration. These techniques complicate the detection of the malware by antivirus programs. Polymorphic malware has been used in several notable attacks, spreading rapidly and evading detection by frequently changing its form. This type of malware is particularly challenging because it requires advanced detection methods beyond traditional signature-based scanning.
2. Fileless Malware
Fileless malware is a type of malicious software that operates without installing an actual file on the device. Over 70% of malware attacks do not involve any files.
It is written directly into the computer’s short-term memory (RAM). This kind of malware exploits the device’s resources to carry out malicious activities without leaving a traditional trace on the hard drive. Fileless malware typically begins with a phishing email or another form of phishing attack. The email contains a malicious link or attachment that appears legitimate but is designed to deceive the user into interacting with it. Once the user clicks on the link or opens the attachment, the malware activates and runs directly in RAM. It often exploits vulnerabilities in software such as document readers or browser plugins to infiltrate the device. After accessing the device, fileless malware employs trusted operating system administration tools like PowerShell or Windows Management Instrumentation (WMI) to connect to a remote command and control center. From there, it downloads and executes additional malicious scripts, enabling attackers to perform further harmful activities directly within the device’s memory. Fileless malware can exfiltrate data, sending stolen information to attackers and potentially spreading across the network to access and compromise other devices or servers. This type of malware is particularly dangerous because it can function without leaving any files behind, making it challenging to detect using traditional methods.
3. Advanced Ransomware
Ransomware is a sophisticated form of malware designed to hold your data hostage by encrypting it. Advanced ransomware now targets not just individual computers but entire networks. It uses strong encryption methods and often steals sensitive data before encrypting it. This adds extra pressure on victims to pay the ransom because their data could be leaked publicly if they don’t comply. Ransomware attacks typically start with the installation of a ransomware agent on the victim’s computer. This agent encrypts critical files on the computer and any attached file shares. After encryption, the ransomware displays a message explaining what happened and how to pay the attackers. If the victims pay, they are promised a code to unlock their data. Advanced ransomware attacks have become more common, with threats targeting various sectors, including healthcare and critical infrastructure. These attacks can cause significant financial losses and disrupt essential services.
4. Social Engineering Malware
Social engineering malware tricks people into installing it by pretending to be something safe. It often comes in emails or messages that look real but are fake. This type of malware relies on people making mistakes rather than exploiting technical weaknesses. Social engineering attacks follow a four-step process: information gathering, establishing trust, exploitation, and execution. Cybercriminals gather information about their victims, pose as legitimate individuals to build trust, exploit that trust to collect sensitive information, and finally achieve their goal, such as gaining access to online accounts.
5. Rootkit Malware
Rootkit malware is a program or collection of malicious software tools that gives attackers remote access to and control over a computer or other system.
Although rootkits have some legitimate uses, most are used to open a backdoor on victims’ systems to introduce malicious software or use the system for further network attacks. Rootkits often attempt to prevent detection by deactivating endpoint antimalware and antivirus software. They can be installed during phishing attacks or through social engineering tactics, giving remote cybercriminals administrator access to the system. Once installed, a rootkit can install viruses, ransomware, keyloggers, or other types of malwares, and even change system configurations to maintain stealth.
6. Spyware
Spyware is malicious software designed to enter your computer device, gather data about you, and forward it to a third party without your consent.
Spyware can monitor your activities, steal your passwords, and even watch what you type. It often affects network and device performance, slowing down daily user activities. Spyware infiltrates devices via app install packages, malicious websites, or file attachments. It captures data through keystrokes, screen captures, and other tracking codes, then sends the stolen data to the spyware author. The information gathered can include login credentials, credit card numbers, and browsing habits.
7. Trojan Malware
Trojan malware is a sneaky type of malware that infiltrates devices by camouflaging itself as a harmless program. Trojans are hard to detect, even if you’re extra careful. They don’t self-replicate, so most Trojan attacks start with tricking the user into downloading, installing, and executing the malware. Trojans can delete files, install additional malware, modify data, copy data, disrupt device performance, steal personal information, and send messages from your email or phone number. They often spread through phishing scams, where scammers send emails from seemingly legitimate business email addresses.
Protect Yourself from Malware
Protecting yourself from malware requires using the right technology and being aware of the risks. By staying informed and proactive, you can significantly reduce the risk of malware infections. If you need help safeguarding your digital world, contact us today for expert advice.
