A laughing RAT: CrystalX combines spyware, stealer, and prankware features


In March 2026, Kaspersky researchers discovered an active campaign promoting previously unknown malware in private Telegram chats. The Trojan was offered as a MaaS (malware‑as‑a‑service) with three subscription tiers.

It caught the researchers attention because of its extensive arsenal of capabilities. On the panel provided to third‑party actors, in addition to the standard features of RAT‑like malware, a stealer, keylogger, clipper, and spyware are also available. Most surprisingly, it also includes prankware capabilities: a large set of features designed to trick, annoy, and troll the user. Such a combination of capabilities makes it a rather unique Trojan in its category. Kaspersky’s products detect this threat as Backdoor.Win64.CrystalX.*, Trojan.Win64.Agent.*, Trojan.Win32.Agentb.gen.

Read more…
Source: Kaspersky


Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox


Related:

  • QBot partners with Egregor ransomware in bot-fueled attacks

    November 20, 2020

    The Qbot banking trojan has dropped the ProLock ransomware in favor of the Egregor ransomware who burst into activity in September. Qbot, otherwise known as QakBot or QuakBot, is Windows malware that steals bank credentials, Windows domain credentials, and provides remote access to threat actors who install ransomware. Victims usually become infected with Qbot through phishing emails ...

  • Android chat app with 100 million installs exposes private messages

    November 19, 2020

    GO SMS Pro, an Android instant messaging application with over 100 million installs, is publicly exposing private multimedia files shared between its users. By abusing a flaw in the app, unauthenticated attackers can gain access to private voice messages, videos, and photos shared by GO SMS Pro users as Trustwave security researchers discovered three months ago. The ...

  • Robot Vacuums Suck Up Sensitive Audio in ‘LidarPhone’ Hack

    November 19, 2020

    Researchers have uncovered a new attack that lets bad actors snoop in on homeowners’ private conversations – through their robot vacuums. The vacuums, which utilize smart sensors in order to autonomously operate, have gained traction over the past few years. The attack, called “LidarPhone” by researchers, in particular targets vacuums with LiDAR sensors, as the name ...

  • Egregor Ransomware Attack Hijacks Printers to Spit Out Ransom Notes

    November 19, 2020

    So, you’re a ransomware gang and you want to ensure that you have caught the attention of your latest corporate victim. You could simply drop your ransom note onto the desktop of infected computers, informing the firm that their files have been encrypted. Too dull? You could lock infected PCs and display a ghoulish skull on a bright ...

  • Advanced Threat predictions for 2021

    November 19, 2020

    Trying to make predictions about the future is a tricky business. However, while we don’t have a crystal ball that can reveal the future, we can try to make educated guesses using the trends that we have observed over the last 12 months to identify areas that attackers are likely to seek to exploit in ...

  • Exploiting AI – How Cybercriminals Misuse and Abuse Artificial Intelligence and Machine Learning

    November 19, 2020

    Artificial intelligence (AI) is swiftly fueling the development of a more dynamic world. AI, a subfield of computer science that is interconnected with other disciplines, promises greater efficiency and higher levels of automation and autonomy. Simply put, it is a dual-use technology at the heart of the fourth industrial revolution. Together with machine learning (ML) ...