Discord is targeted by malware which can turn the app into a data-stealing backdoor

A new strain of malware turns Windows Discord client into the information-stealing Trojan

Discord malware steals users' dataDiscord client gets modified by Spidey Bot to act as a backdoor trojan. Warning! Discord users have been targeted by malware which can cause identity theft and other issues.[1] Being named as Spidey Bot, the malware installs files presented as Discord-related data and kills the program at the beginning. Once restarted, specific modules and core files are changed, so the application can launch malicious processes on the machine and perform all the campaigns from the startup.

Since Discord is the Electron application, most of the functions are driven from HTML, CSS, and JavaScript so that malicious actors could modify needed files and run it as a virus.[2] However, the most important fact is that, once malware restarts all the processes related to the legitimate platform and executes numerous API commands, it gets the ability to collect data about the user.

Data stolen by the malicious Discord version includes sensitive details

Once the specific information is recorded, it is sent to the hacker via the Discord webhook. The additional process gets executed at the same time, and the virus acting as a backdoor is launched. Other commands can be executed after the remote site connection is allowed. The attacker gets an ability to perform numerous malicious activities like stealing payment information, executing programs on the system directly, or installing malware further on the device.[3]

The malware is targeting a variety of data that can be obtained from the chatting platform itself:

  • details about the Discord version used;
  • the browser user agent;
  • first 50 characters out of the victims' Windows clipboard;
  • zoom factor;
  • stored payment information;
  • username;
  • email address;
  • phone number;
  • a public IP address;
  • a local IP address;
  • screen resolution;
  • timezone;
  • Discord user token.

Data that can be accessed and stored is pretty valuable, especially usernames and clipboard content. After sensitive details like passwords or personal information are copied, hackers may continue their attacks, e.g. steal money directly from the victim's account, send blackmailing emails, etc.[4]

Another danger – malware in Discord messages

Even in-depth analysis cannot confirm that Spidey Bot virus has been delivered by using one distinct method, it is suggested that attackers are using the messaging application itself to spread the malware. Unfortunately, it is not a good thing since users cannot know if the system was infected or not. To indicate this, the network sniffing, during which unusual API and webhook can be determined, is required.

Even if the installer is removed, modified Discord files might still remain on the system and continue to execute the malicious processes on the system with each reboot. Uninstalling and reinstalling the Discord app is the only way to clean the infection completely with all the modified files what is highly recommended if any suspicious activity is noticed.

This is not the first time when Discord is misused for malicious campaigns. Scamming techniques that target stolen credit card data, accounts with weak passwords and malicious apps pretending to be Discord have been misusing app's name for years. However, having in mind how has the popularity of this app increased, there is no surprise that it has been included in dozens of different fraudulent campaigns.[5]

About the author
Gabriel E. Hall
Gabriel E. Hall - Passionate web researcher

Gabriel E. Hall is a passionate malware researcher who has been working for 2-spyware for almost a decade.

Contact Gabriel E. Hall
About the company Esolutions