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

  • Distribution Method : Unknown
  • MD5 : 4ef811b784b985769645e03bc0b9cd24
  • Major Detection Name : Ransomware/Win.MedusaLocker.R335910 (AhnLab V3), Ransom:Win32/MedusaLocker!pz (Microsoft)
  • Encrypted File Pattern : .L47
  • Malicious File Creation Location :
     - C:\Users\%UserName%\AppData\Roaming\svhost.exe
     - C:\Windows\System32\Tasks\svhost
  • Payment Instruction File : HOW_TO_RECOVER_DATA.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 (fdlauncher.exe, QBIDPService.exe, RAgui.exe, sqlbrowser.exe, supervise.exe, tomcat6.exe etc.)
     - Stop multi services (ccSetMgr, 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, wmic.exe SHADOWCOPY /nointeractive, wbadmin DELETE SYSTEMSTATEBACKUP, wbadmin DELETE SYSTEMSTATEBACKUP -deleteOldest)
     - Adds svhost to scheduler to execute "%AppData%\svhost.exe" Every 15 minutes.