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PLAINTEE

PLAINTEE is a malware sample that has been used by Rancor in targeted attacks in Singapore and Cambodia. [1]

ID: S0254
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Type: MALWARE
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Platforms: Windows
Version: 1.1
Created: 17 October 2018
Last Modified: 30 March 2020
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Enterprise Layer
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Techniques Used

Domain ID Name Use
Enterprise T1548 .002 Abuse Elevation Control Mechanism: Bypass User Account Control

An older variant of PLAINTEE performs UAC bypass.[1]
Enterprise T1547 .001 Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder

PLAINTEE gains persistence by adding the Registry key HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce.[1]
Enterprise T1059 .003 Command and Scripting Interpreter: Windows Command Shell

PLAINTEE uses cmd.exe to execute commands on the victim’s machine.[1]
Enterprise T1573 .001 Encrypted Channel: Symmetric Cryptography

PLAINTEE encodes C2 beacons using XOR.[1]
Enterprise T1105 Ingress Tool Transfer

PLAINTEE has downloaded and executed additional plugins.[1]
Enterprise T1112 Modify Registry

PLAINTEE uses reg add to add a Registry Run key for persistence.[1]
Enterprise T1057 Process Discovery

PLAINTEE performs the tasklist command to list running processes.[1]
Enterprise T1082 System Information Discovery

PLAINTEE collects general system enumeration data about the infected machine and checks the OS version.[1]
Enterprise T1016 System Network Configuration Discovery

PLAINTEE uses the ipconfig /all command to gather the victim’s IP address.[1]

Groups That Use This Software

ID Name References
G0075 Rancor

[1]

References

  1. Ash, B., et al. (2018, June 26). RANCOR: Targeted Attacks in South East Asia Using PLAINTEE and DDKONG Malware Families. Retrieved July 2, 2018.