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  3. PLAINTEE

PLAINTEE

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

ID: S0254
Type: MALWARE
Platforms: Windows
Version: 1.0
Enterprise Layer
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Techniques Used

Domain ID Name Use
Enterprise T1088 Bypass User Account Control

An older variant of PLAINTEE performs UAC bypass.[1]
Enterprise T1059 Command-Line Interface

PLAINTEE uses cmd.exe to execute commands on the victim’s machine.[1]
Enterprise T1094 Custom Command and Control Protocol

PLAINTEE uses a custom UDP protocol to communicate.[1]
Enterprise T1024 Custom Cryptographic Protocol

PLAINTEE encodes C2 beacons using XOR.[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 T1060 Registry Run Keys / Startup Folder

PLAINTEE gains persistence by adding the Registry key HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce.[1]
Enterprise T1105 Remote File Copy

PLAINTEE has downloaded and executed additional plugins.[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.