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What Is The Main Purpose Of Malware

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The Importance Of Malware Triage

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Malware analysis is a practical process of identifying and assessing threats. Here’s a quick explanation of the malware scanning process and how it works.

What is malware scanning? It is a practical way to understand the individual functions, purposes, origins and potential impacts of different types of malware and code. This involves evaluating and learning how each specific sample works and how its code differs from other types of malware. This includes malware contained in suspicious files and website links.

If you are an alert Windows user, sometimes you may see a file with a strange or suspicious name that you would like to investigate. Or, if you are an ethical hacker or part of an organization’s incident response team, you may be responsible for analyzing files to determine whether they are legitimate or malicious. Either way, you need a way to differentiate good code and software from the malicious varieties.

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The idea for a self-replicating computer program was thought to come from computer scientist John von Neumann. However, Scientific American reports that Bell Labs brought this hypothesis to life in the 1950s with the design of a game called “Core Wars” (which wasn’t released until 1984). Now, decades later, cybercriminals are encrypting files with malware, disrupting networks and exfiltrating data.

Malware is any software that is harmful to your system: worms, viruses, Trojan horses, spyware, etc. Discovering them remains a challenge as attackers write increasingly sophisticated programs to evade detection. Malware analysis can help you determine if a suspicious file is indeed malicious, study its origin, process, capabilities, and evaluate its impact to aid detection and prevention.

Malware can be distributed through different channels such as emails (phishing attacks), USB drives, downloading software from websites, etc. They disguise themselves by using obfuscation methods to imitate legitimate files or applications in order to trick users into downloading them. Once malware compromises a host system, it uses various persistence techniques (such as modifying system files or adding malicious code) to stay there until a triggering event initiates the attack .

What Is Malware Analysis

There are two ways to approach the malware analysis process: using static analysis or dynamic analysis. With static analysis, the malware sample is examined without detonating it, while with dynamic analysis, the malware is actually executed in a controlled, isolated environment.

Static malware analysis is signature-based: the signature of the malware binary is determined by calculating the cryptographic hash.

The malware binary can be reverse engineered using disassemblers and debuggers to understand and control aspects of the program as it executes.

When you learn to write and read code, you do it little by little. Malware scanning is pretty much the same. It’s a process that you approach through a series of formulated steps that become more and more complex as you proceed.

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There are four steps to malware analysis, often illustrated using a pyramid diagram that increases in complexity as you progress through the process. For simplicity’s sake, we’ll break down each of the four steps of malware scanning from scratch.

Automated malware analysis involves relying on detection models trained by analyzing malware samples previously discovered in the wild. This is the best method for processing malware at scale and quickly assessing the impact of a sample on network infrastructure.

Fully automated scanning can be performed using tools such as Cuckoo Sandbox, an open source automated malware scanning platform that can be modified to run custom scripts and generate comprehensive reports. There are several other alternative tools, both commercial and free, available on the market.

Static property analysis involves examining a file’s metadata without running the malware. This process is usually something you do in an isolated environment, such as a virtual machine, disconnected from the Internet.

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One of the free tools that might be useful to you for this purpose is PeStudio. This tool reports suspicious artifacts in executable files and is designed for automated analysis of static properties. PeStudio presents file hashes that can be used to search VirusTotal, TotalHash, or other malware repositories to see if the file has already been scanned. Additionally, it can be used to examine embedded strings, libraries, imports, and other indicators of compromise (IOCs) and compare any unusual values ​​that differ from those typically seen in regular executable files.

Ideally, performing a static property analysis should allow the malware analyst to know whether to continue or stop the investigation.

In the next phase, behavior analysis, the malware sample is executed in isolation while the analyst observes how it interacts with the system and the changes it makes. Often, malware may refuse to execute if it detects a virtual environment or may be designed to avoid execution without manual interaction (i.e., in an automated environment).

Some types of malware may attempt to connect to suspicious host IP addresses that do not belong to environments. Others might also try creating mutex objects to avoid infecting the same host multiple times (to preserve operational stability). These results are relevant indicators of compromise.

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Of course, you can do additional research on the new data points you collect using any malware analysis database. Likewise, additional network analysis can reveal details about the malware specimen’s command and control infrastructure, the volume and type of data it leaks, etc.

Typically, to manually reverse code, analysts use debuggers and disassemblers. Although code reversals are an extremely time-consuming process – and even though the skills needed to perform them are not particularly common – this step can provide a lot of important information.

Now that we’ve reviewed how an analyst can study a malware sample, we’re still wondering what steps you take to protect your systems from malware attacks. Let’s take a look at some basic guidelines for

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