A Remote Access Trojan (RAT) is a type of malware that allows cybercriminals to take complete control of a victim’s device remotely, typically without their knowledge. These tools enable attackers to carry out a number of malicious actions, such as stealing data, installing additional malware, or using the infected device to target others.
As you might expect, RATs are typically delivered through phishing emails, attachments, or links to infected websites.
In terms of how RATs work, a person might receive an email appearing to be from their bank, urging them to download a “critical update.” Once the soon-to-be victim downloads and runs the file, the RAT installs itself in the background, often disguising its presence as a legitimate application or by hiding in system files. The attacker gains remote access, enabling them to monitor the victim’s activity, manipulate files, record keystrokes, or even activate the device’s camera or microphone.
Just recently, an Android RAT called DroidBot was found to be wreaking havoc among financial institutions and on cryptocurrency exchanges. This coming not long after the SambaSpy RAT was discovered in September.
Downloading software from unofficial sources can result in inadvertently installing a RAT, just as visiting a compromised website may trigger a drive-by download that installs a RAT without user interaction. And in case anyone needed another reason to stay away from cracked software, RATs are commonly bundled with pirated games, movies, and applications.
While all malware is harmful, RATs are distinct due to their remote control capabilities. Here are some comparisons:
Keyloggers record keystrokes, while RATs allow full remote manipulation of the system.
Ransomware locks files or systems for extortion purposes, whereas RATs aim to silently monitor and exploit the victim.
Viruses spread between devices autonomously, while RATs rely on direct communication between the attacker and the compromised device.
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