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:

  • Life of Maze ransomware

    October 21, 2020

    In the past year, Maze ransomware has become one of the most notorious malware families threatening businesses and large organizations. Dozens of organizations have fallen victim to this vile malware, including LG, Southwire, and the City of Pensacola. The history of this ransomware began in the first half of 2019, and back then it didn’t have ...

  • MobileIron enterprise MDM servers under attack from DDoS gangs, nation-states

    October 21, 2020

    A month after details were published about three severe vulnerabilities in a type of server used to manage fleets of mobile devices, multiple threat actors are now exploiting these bugs to take over crucial enterprise servers and even orchestrate intrusions inside company networks. The targets of these attacks are MDM servers from software maker MobileIron. MDM stands ...

  • Montreal’s STM public transport system hit by ransomware attack

    October 21, 2020

    Montreal’s Société de transport de Montréal (STM) public transport system was hit with a RansomExx ransomware attack that has impacted services and online systems. On October 19th, STM suffered an outage that affected its IT systems, website, and customer support. While these outages did not affect the operation of buses or metro systems, people with disabilities who ...

  • Seedworm: Iran-Linked Group Continues to Target Organizations in the Middle East

    October 21, 2020

    The Iran-linked espionage group Seedworm (aka MuddyWater) has been highly active in recent months, attacking a wide range of targets, including a large number of government organizations in the Middle East. Many of the organizations attacked by Seedworm in recent months have also been targeted by a recently discovered tool called PowGoop (Downloader.Covic), suggesting that it ...

  • Google Patches Actively-Exploited Zero-Day Bug in Chrome Browser

    October 21, 2020

    Google released an update to its Chrome browser that patches a zero-day vulnerability in the software’s FreeType font rendering library that was actively being exploited in the wild. Security researcher Sergei Glazunov of Google Project Zero discovered the bug which is classified as a type of memory-corruption flaw called a heap buffer overflow in FreeType. Glazunov ...

  • Adobe Fixes 16 Critical Code-Execution Bugs Across Portfolio

    October 20, 2020

    Adobe has released 18 out-of-band security patches in 10 different software packages, including fixes for critical vulnerabilities that stretch across its product suite. Adobe Illustrator was hit the hardest. There are 16 critical bugs, all of which allow arbitrary code execution in the context of the current user. They affect Adobe Illustrator, Adobe Animate, Adobe After ...