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

  • Distribution Method : Remote access through Remote Desktop Protocol(RDP) or Terminal Services
 
  • MD5 : c8d0b3efe09caffc7eb1223dd9125568
 
  • Major Detection Name : TR/AD.MedusaRansom.yvkui (Avira), Trojan-Ransom.Win32.Medusa.aj (Kaspersky)
 
  • Encrypted File Pattern : .datalock
 
  • Malicious File Creation Location :
     - C:\Users\%UserName%\AppData\Roaming\svhost.exe
     - C:\Windows\System32\Tasks\svhost
 
  • Payment Instruction File : Recovery_Instructions.html
 
  • Major Characteristics :
     - Offline Encryption
     - EFI System Partition (X:\) and Recovery Partition (Y:\) drives are activate.
     - Turns off User Access Control (UAC)
     - Block processes execution (360doctor.exe, Culture.exe, MsDtSrvr.exe, RTVscan.exe, sqlservr.exe, tomcat6.exe etc.)
     - Stop multi services (ccEvtMgr, Culserver, DefWatch, SQLADHLP, sqlagent, vmware-usbarbitator64 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 to scheduler to execute "%AppData%\svhost.exe" Every 15 minutes.

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