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Check out our video library AppCheck defending against newest ransomware, automatic recovery and real-time backup.

  • Distribution Method : Unknown
 
  • MD5 : 7212675ad49b5134c6dc7509669b1526
 
  • Major Detection Name : Ransom:Win32/MedusaLocker.AC!MTB (Microsoft), Troj/Medusa-Fam (Sophos)
 
  • Encrypted File Pattern : .cipher1
 
  • Malicious File Creation Location :
     - C:\Users\%UserName%\AppData\Roaming\svhost.exe
     - C:\Windows\System32\Tasks\svhost
 
  • Message File : !-Recovery_Instructions-!.html
 
  • Major Characteristics :
     - Offline Encryption
     - EFI System Partition (X:\) + Recovery Partition (Y:\) drives are activate.
     - Turns off User Access Control (UAC)
     - Block processes execution (MsDtsServer130.exe, MSSQLFDLauncher.exe, ReportServer.exe, SQLSERVERAGENT.exe, TMBMServer.exe, wxServer.exe etc.)
     - Stop multi services (ccEvtMgr, FirebirdGuardianDefaultInstance, MSSQLFDLauncher, SQLSERVERAGENT, storflt, vmickvpexchange etc.)
     - Disable system restore (vssadmin.exe Delete Shadows /All /Quiet, bcdedit.exe /set {default} recoveryenabled No, bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures, wbadmin DELETE SYSTEMSTATEBACKUP, wbadmin DELETE SYSTEMSTATEBACKUP -deleteOldest, wmic.exe SHADOWCOPY /nointeractive)
     - Adds svhost task scheduler to automatically run the file "%AppData%\svhost.exe" for every 30 minutes.

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