How To Detect Malware?

Updated on October 21, 2022, by Xcitium

How do you detect malware?

You can detect malware by identifying unusual system behavior, running antivirus scans, monitoring network activity, and checking for unknown programs or file changes. These signs, known as indicators of compromise (IoCs), help identify infections early and reduce damage.

Has your computer or laptop been infected with malware? Here is a guide on how to detect and remove malware safely. Viruses, Spyware, Trojan Horse, Adware, worms, keyloggers, etc., are terms that you may or may not have heard before. All of these are “malware,” which is short for “malicious software.”

Malware is a type of malicious software running or installed on your computer without your consent. As mentioned earlier, it can come in many different forms such as viruses, worms, trojan horses, adware, etc. Though all types of malware can damage your computer and slow it down, spyware is the most dangerous form of malware because it steals private information such as credit card numbers and passwords. It is advisable to remove malware quickly or block it from gaining access to your computer, as it can quickly spread and corrupt your computer and other computers in your network.

If your PC seems to be infected with malware, here are some of the options available to you.

If you are using Windows OS, you can manually remove malware from the control panel feature “Add or Remove Programs.” However, it is not advisable to remove malware by yourself. Malware can disguise itself pretty well and can take on many different forms. Unless and until you are a computer savvy person it is nearly impossible to remove all of it. You could also accidentally delete a necessary system file which can mess your computer up even worse!

You can use antimalware software like Xcitium Antivirus which can detect and eliminate all forms of malware including spyware, adware, and other dangerous viruses.

Common Symptoms of Malware Infection

Slow performance or frequent crashes
Unexpected pop-ups or ads
Unknown programs running
High CPU or memory usage
Disabled antivirus or firewall
Unauthorized file changes

👉 These symptoms are often Indicators of Compromise (IoCs)—digital evidence of a breach such as suspicious files, unusual traffic, or abnormal system activity

How to Detect Malware (Step-by-Step)

1. Run a Full Malware Scan

Use antivirus or endpoint security tools to detect known threats.

2. Check Running Processes

Look for unfamiliar or suspicious processes in Task Manager.

3. Monitor Network Activity

Unusual outbound connections may indicate malware communication.

4. Review Installed Applications

Remove unknown or recently installed programs.

5. Analyze System Behavior

Watch for abnormal performance, crashes, or overheating.

6. Use Advanced Detection Tools

Leverage endpoint detection (EDR) tools for real-time monitoring.

Malware Detection Techniques

Detection Method	How It Works
Signature-based detection	Matches files with known malware patterns
Behavioral analysis	Detects unusual activity in real time
Sandbox testing	Executes files safely to observe behavior
AI/ML detection	Identifies unknown threats using patterns
Static analysis	Examines code without execution

➡️ Modern malware detection combines multiple techniques because single-layer detection is no longer sufficient

Indicators of Compromise (IoCs)

Type of IoC	Example
File-based	Unknown or modified system files
Network-based	Suspicious IP connections
Endpoint-based	Unauthorized programs running
Behavioral	Unusual login or activity patterns

👉 IoCs act as digital footprints of an attack, helping security teams detect breaches faster

Manual vs Automated Malware Detection

Approach	Pros	Cons
Manual inspection	Useful for investigation	Time-consuming
Antivirus scanning	Easy and fast	Limited for new threats
AI-based detection	Detects unknown threats	Requires advanced tools
EDR solutions	Real-time monitoring	Needs configuration

Tools Used to Detect Malware

Antivirus software (basic detection)
Endpoint Detection & Response (EDR)
Network monitoring tools
Sandbox environments
Threat intelligence platforms

You can detect malware by:

Running antivirus scans
Monitoring unusual system behavior
Checking unknown processes
Analyzing network activity
Reviewing installed programs

The Enterprise Scenario

Let’s look at how to detect and remove a malware infection in an enterprise setting. In a typical enterprise, a malware attack is not likely to go completely unnoticed.

Detection of malware may come from a combination of technologies like antivirus software, or it may come from security systems. Unfortunately, detection of malware alone is not sufficient to identify and mitigate the risk posed by that malware.

Often, malware detection occurs after one of the host systems got compromised. Malware can evolve and spread quickly to other endpoints; it can use self-defense mechanisms such as rootkit technologies to hide its processes from the kernel and disable the antivirus software installed in the host system.

So, there is a dire need for an advanced endpoint protection solution that can detect malware even before they start to infect. Xcitium Advanced Endpoint Protection is such a solution which can identify and remove even zero-hour malware.

Thanks to the Default Deny Platform, Xcitium Advanced Endpoint Protection (AEP) can allow all known good, and block all known bad files, automatically containing the remaining unknown. It provides all-around protection for your endpoints that no other endpoint protection solutions can match.

Xcitium Advanced Endpoint Protection has already stopped more than 85 million endpoints from being infected. It has contained over 32 million unknown files and detected over 3.5 million pieces of malware in those unknown files. It is the only Endpoint Protection solution that protects you against unknown files. Try Xcitium Advanced Endpoint Protection today!