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TURNEDUP

TURNEDUP is a non-public backdoor. It has been dropped by APT33's StoneDrill malware. [1] [2]

ID: S0199
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Type: MALWARE
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Platforms: Windows
Contributors: Christiaan Beek, @ChristiaanBeek; Ryan Becwar
Version: 1.1
Created: 18 April 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

TURNEDUP is capable of writing to a Registry Run key to establish.[3]
Enterprise T1059 .003 Command and Scripting Interpreter: Windows Command Shell

TURNEDUP is capable of creating a reverse shell.[1]
Enterprise T1105 Ingress Tool Transfer

TURNEDUP is capable of downloading additional files.[1]
Enterprise T1055 .004 Process Injection: Asynchronous Procedure Call

TURNEDUP is capable of injecting code into the APC queue of a created Rundll32 process as part of an "Early Bird injection."[3]
Enterprise T1113 Screen Capture

TURNEDUP is capable of taking screenshots.[1]
Enterprise T1082 System Information Discovery

TURNEDUP is capable of gathering system information.[1]

Groups That Use This Software

ID Name References
G0064 APT33

[1][2][4]

References

  1. O'Leary, J., et al. (2017, September 20). Insights into Iranian Cyber Espionage: APT33 Targets Aerospace and Energy Sectors and has Ties to Destructive Malware. Retrieved February 15, 2018.
  2. Davis, S. and Carr, N. (2017, September 21). APT33: New Insights into Iranian Cyber Espionage Group. Retrieved February 15, 2018.
  1. Gavriel, H. & Erbesfeld, B. (2018, April 11). New ‘Early Bird’ Code Injection Technique Discovered. Retrieved May 24, 2018.
  2. Security Response attack Investigation Team. (2019, March 27). Elfin: Relentless Espionage Group Targets Multiple Organizations in Saudi Arabia and U.S.. Retrieved April 10, 2019.