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Matrix Ransomware (<Original Filename>.<Original Extension> → [].<Random>-<Random>.FRFO)

  • Distribution Method : Unknown
  • MD5 : 013ca6a4cabe28fc5d19c384483129c1
  • Major Detection Name : Trojan/Win32.Matrixran.R234829 (AhnLab V3), Generic.Ransom.Matrix.2751B995 (BitDefender)
  • Encrypted File Pattern : <Original Filename>.<Original Extension> → [].<Random>-<Random>.FRFO
  • Malicious File Creation Location :
     - C:\Users\%UserName%\AppData\Roaming\<Random>.bat
     - C:\Users\%UserName%\\AppData\Roaming\<Random>.vbs
     - C:\Windows\System32\Tasks\DSHCA
  • Payment Instruction File : FRFO_INFO.rtf
  • Major Characteristics :
     - Offline Encryption
     - Reruns by adding "DSHCA" in Task Scheduler to disable system restore (vssadmin Delete Shadows /All /Quiet, wmic SHADOWCOPY DELETE, bcdedit /set {default} recoveryenabled No, bcdedit /set {default} bootstatuspolicy ignoreallfailures) for every 5 minutes.
     - Changes desktop background (C:\Users\%UserName%\AppData\Roaming\<Random>.bmp)