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Truvasys

Truvasys is first-stage malware that has been used by PROMETHIUM. It is a collection of modules written in the Delphi programming language. [1] [2] [3]

ID: S0178
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Type: MALWARE
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Platforms: Windows
Version: 1.1
Created: 16 January 2018
Last Modified: 25 April 2025
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Enterprise Layer
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Techniques Used

Domain ID Name Use
Enterprise T1547 .001 Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder

Truvasys adds a Registry Run key to establish persistence.[1]
Enterprise T1036 .004 Masquerading: Masquerade Task or Service

To establish persistence, Truvasys adds a Registry Run key with a value "TaskMgr" in an attempt to masquerade as the legitimate Windows Task Manager.[1]

Groups That Use This Software

ID Name References
G0056 PROMETHIUM

[2][3]

References

  1. Microsoft. (2017, September 15). Backdoor:Win32/Truvasys.A!dha. Retrieved November 30, 2017.
  2. Microsoft. (2016, December 14). Twin zero-day attacks: PROMETHIUM and NEODYMIUM target individuals in Europe. Retrieved November 27, 2017.
  1. Anthe, C. et al. (2016, December 14). Microsoft Security Intelligence Report Volume 21. Retrieved November 27, 2017.