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Buran Ransomware (.[<Random>-<Random>-<Random>-<Random>-<Random>])

  • Distribution Method : Unknown
 
  • MD5 : de1d080b92c5f8c5468b7beb1597b553
 
  • Major Detection Name : Trojan.Ransom.VegaLocker (ALYac), Ransom.FileCryptor (Malwarebytes)
 
  • Encrypted File Pattern : .[<Random>-<Random>-<Random>-<Random>-<Random>]
 
  • Malicious File Creation Location : C:\Users\%UserName%\Desktop\!!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT
 
  • Payment Instruction File : !!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT
 
  • Major Characteristics :
     - Offline Encryption
     - VegaLocker Ransomware series
     - Disable system restore (bcdedit /set {default} bootstatuspolicy ignoreallfailures, bcdedit /set {default} recoveryenabled no, wbadmin delete catalog -quiet, wbadmin delete systemstatebackup, wbadmin delete systemstatebackup -keepversions:0, wbadmin delete backup, wmic shadowcopy delete, vssadmin delete shadows /all /quiet)
     - Initializing the Terminal Server Client Registry (reg delete "HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\Default" /va /f, reg delete "HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\Default" /va /f, reg delete "HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\Default" /va /f)
     - Deletes event log (wevtutil.exe clear-log Application, wevtutil.exe clear-log Security, wevtutil.exe clear-log System, sc config eventlog start=disabled)

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