How to Identify Malware Using Microsoft's Autoruns

Malware has become an increasingly common problem for individuals and organizations alike. One of the primary ways that malware can spread is by creating a run key on a device, allowing it to automatically launch when the device is booted or a user logs in. In this article, we will explore how Microsoft's Autoruns tool can be used to identify suspicious software and remove malware from your home PC.

What is a Run Key?

A run key is part of a device's Registry, which stores settings and options for the operating system and installed applications. Malware often creates a run key so that when a device is booted, it will automatically be launched. This includes program startup locations and relevant run keys.

The Logon Tab in Autoruns

When you open Autoruns, you will see multiple tabs each containing data regarding an autostart mechanism. The Logon tab displays information for standard startup locations for all users on the device. In the image below, we can see that Autoruns is made up of multiple tabs that each contain data regarding an autostart mechanism.

How to Identify Suspicious Software with Autoruns

Once a machine is powered down, malware needs a mechanism to continue running on the device. If a device has been compromised, any installed malware will also need to be able to survive a reboot. Legitimate software will often launch when a machine is powered on - Outlook is a prime example as users checking their email is often the first thing people do when logging onto their device.

Using Autoruns to Identify Malware

Autoruns is a Microsoft tool that identifies software configured to run when a device is booted, or a user logs into their account. By understanding how to use Autoruns, you may be able to detect if your home PC is infected with unwanted software. To do this, follow these steps:

1. Download and install Autoruns from the Microsoft website.

2. Open Autoruns and click on the Logon tab.

3. Look for any suspicious entries that are not recognized by Windows or are not necessary for normal system functioning.

Malware can be a serious threat to your home PC, but by using Microsoft's Autoruns tool, you may be able to detect and remove it. Remember to always follow best practices for online safety and to regularly update your operating system and antivirus software to prevent malware from infecting your device in the first place.

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