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Amnesia Ransomware (<Random Filename>.bruuuuz@yahoo.com)

  • Distribution Method : Unknown
 
  • MD5 : 8010ab7ea083a479cdd4f96c10838a4a
 
  • Major Detection Name : a variant of Win32/Kryptik.GJTW (ESET), Mal/Elenoocka-G (Sophos)
 
  • Encrypted File Pattern : <Random Filename>.bruuuuz@yahoo.com
 
  • Malicious File Creation Location :
     - C:\Users\%UserName%\AppData\Roaming\barsik.exe
     - C:\Users\%UserName%\HOW TO RECOVER ENCRYPTED FILES.TXT
 
  • Payment Instruction File : HOW TO RECOVER ENCRYPTED FILES.TXT
 
  • Major Characteristics :
     - Offline Encryption
     - Scarab / Scarabey Ransomware series
     - Block processes execution (isqlplussvc.exe, msftesql.exe, sqlagent.exe, sqlbrowser.exe, sqlserver.exe, sqlservr.exe etc.)
     - Disable system restore (wbadmin DELETE SYSTEMSTATEBACKUP -keepVersions:0, wmic SHADOWCOPY DELETE, vssadmin Delete Shadows /All /Quiet, bcdedit /set {default} recoveryenabled No, bcdedit /set {default} bootstatuspolicy ignoreallfailures)
     - Checks following folder name for encryption: Adobe, Firebird, Microsoft, Microsoft SQL Server, Microsoft SQL Server Compact Edition, MSSQL.1, Oracle
     - Results system booting failure by encrypting "C:\bootmgr"
     - Changes desktop background (C:\Users\%UserName%\WJfjKihrrmURj.bmp)

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