7 New and Tricky Types of Malware to Watch Out For

Malware is a huge threat in the digital world. It can cause a lot of damage and cost people a lot of money. As technology advances, so do the tactics used by cybercriminals. In this article, we will explore some of the newest and trickiest types of malware.

7 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 hard for antivirus software to detect because it looks different each time. Polymorphic malware uses an encryption key to change its shape and signature. It combines a mutation engine with self-propagating code to change its appearance continuously and rapidly morph its code.

This malware consists of two main parts: an encrypted virus body and a virus decryption routine. The virus body changes its shape, while the decryption routine remains the same and decrypts and encrypts the other part. This makes it easier to detect polymorphic malware compared to metamorphic malware, but it can still quickly evolve into a new version 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 make it harder for antivirus programs to detect the malware. Polymorphic malware has been used in several notable attacks, where it spread rapidly and evaded detection by changing its form frequently. This type of malware is particularly challenging because it requires advanced detection methods beyond traditional signature-based scanning.

2. Fileless Malware

Fileless malware is malicious software that works without planting an actual file on the device. Over 70% of malware attacks do not involve any files. It is written directly into the short-term memory (RAM) of the computer. This type of malware exploits the device’s resources to execute malicious activities without leaving a conventional trace on the hard drive.

Fileless malware typically starts with a phishing email or other phishing attack. The email contains a malicious link or attachment that appears legitimate but is designed to trick the user into interacting with it. Once the user clicks on the link or opens the attachment, the malware is activated and runs directly in RAM. It often exploits vulnerabilities in software like document readers or browser plugins to get into the device.

After entering the device, fileless malware uses 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, allowing 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 operate without leaving any files behind, making it difficult 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 actually 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 give 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 malware, 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 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.

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Featured Image Credit

This Article has been Republished with Permission from The Technology Press.

Where Do Deleted Files Go?

It may seem like the file is gone for good when you delete it from your computer. However, the truth is more complicated than that. A deleted file doesn’t really disappear from your hard drive; it stays there until new data fills up the space it occupied. 

This process might be hard to understand for people who don’t know much about how computers handle files. We’ll discuss what happens to deleted files, how to recover them, and why they might still be on your device.

What Happens When You Delete a File?

It’s not as easy as it seems to delete a file. When you send a file to the Trash or Recycle Bin, it is not erased from your hard drive right away. It is instead taken to a temporary storage place and stays there until you decide to empty the bin. The file’s data stays on the hard drive even after the bin is empty; it is marked as free space that can be used by other files.

When you delete a file, you remove its record from the file system. The file system is like a directory that keeps track of all the files on your computer. The operating system will no longer know where the file is, but the data inside will still be there. This is why it’s often possible to recover deleted files with special software, as long as the space hasn’t been filled with something else.

Getting rid of files is a lot like taking the title off of a VHS tape. People who are looking for the movie can still find it on the tape, but without the name, it’s like the movie doesn’t exist. Also, when you remove a file, you’re removing its label from the file system. The data, on the other hand, stays on the hard drive until it’s overwritten.

To manage data successfully and safely, you need to understand this process. For instance, deleting private information might not be enough if you want to be sure it’s gone for good. If you want to delete the information on your hard drive safely, you may need to use extra tools. Next, we’ll explore how to recover deleted files and the importance of backups.

How Can I Get Back Deleted Files?

To recover deleted files, you need software that can scan your hard drive for data that has been marked as available but hasn’t been written over yet. This method might work if the file was recently deleted and the space it took up hasn’t been filled with new data.

How Software for Recovery Works

The way recovery software works is by scanning the hard drive for areas that have data in them but are not currently linked to any file in the file system. After that, it tries to rebuild the file by putting these parts back together. How well this process works will depend on how quickly the recovery is attempted and whether the sections have been written over.

What File Recovery Can’t Do

File recovery works sometimes, but not all the time. It’s much harder or even impossible to recover a removed file if the space it took up has been written over. It’s also possible for the quality of the recovered file to vary, with some files being fully recovered and others only partly.

Why Backups Are Important

Because file recovery isn’t always possible, it’s important to keep regular copies of important data. This ensures that you can still access a file through your backups even if you delete it and can’t recover it.

We’ll discuss more about how different devices handle deleted data and the concept of “secure deletion” in the next section. 

What Does Happen on Various Devices?

Deleted files are handled in a few different ways by different systems. Android phones have a folder called “Recently Deleted” where lost files are kept. This is similar to the “Recycle Bin” or “Trash” on any other computer. Photos and movies deleted from an iPhone are kept in the “Recently Deleted” album in the Photos app for 30 days before being deleted for good.

Secure Deletion

Secure deletion does more than just delete a file from the file system; it also writes over the space it took up to make sure the data can’t be retrieved. This is especially important if you want to make sure that all of your private data is gone.

SSDs vs. HDDs

How lost files are dealt with depends on the type of storage device used. Solid-State Drives (SSDs) handle deleted data more efficiently with a method called TRIM. This can make recovery harder than with traditional Hard Disk Drives (HDDs). 

To keep your information safe on multiple devices, you need to know about these differences. Next, we’ll discuss how to ensure that deleted files are really gone and what you can do to keep your data safe.

How To Make Sure Files Are Really Deleted

There is more to do than just putting things in the trash or recycle bin to make sure they are really gone. You need to do more to ensure that the data is safely erased. This is especially important if you want to keep private data safe from unauthorized access.

You can safely delete files with software that is designed for that purpose. These tools delete files and then overwrite the space they filled several times, making it almost impossible to recover the data. In order to keep private data safe, this step is very important and is called “secure deletion.” Good data management practices can help keep your data safe and secure in addition to secure deletion. Some examples are making regular backups and encrypting your data. 

Take Charge of Your Information

To sum up, if you want to keep your digital life safe, you need to know where deleted files go and how to recover them. You can keep your information safe from unauthorized access by managing your data and backing it up regularly. If you need help safely deleting sensitive files or have questions about how to handle your data, please contact us.

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Featured Image Credit

This Article has been Republished with Permission from The Technology Press.