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Matrix Ransomware (<Original Filename>.<Original Extension> → [AskHelp@protonmail.com].<Random>-<Random>.ANN)

  • Distribution Method : Unknown
 
  • MD5 : 607d292bdcdde297252e002e613282ae
 
  • Major Detection Name : Generic.Ransom.Matrix.17CFCB4B (BitDefender), Ransom-Matrix!607D292BDCDD (McAfee)
 
  • Encrypted File Pattern : <Original Filename>.<Original Extension> → [AskHelp@protonmail.com].<Random>-<Random>.ANN
 
  • Malicious File Creation Location :
     - C:\Users\%UserName%\AppData\Roaming\<Random>.bat
     - C:\Users\%UserName%\AppData\Roaming\<Random>.vbs
     - C:\Windows\System32\Tasks\DSHCA
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  • Payment Instruction File : #ANN_README#.rtf
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  • 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)

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