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CryLock v2.0.0 Ransomware (.<Original Extension>[].[<Random>-<Random>])

  • Distribution Method : Remote access through Remote Desktop Protocol(RDP) or Terminal Services
  • MD5 : 0519d9c18a58b871bd6c9eacb6f91943
  • Major Detection Name : HEUR:Trojan-Ransom.Win32.Cryakl.gen (Kaspersky), Ransom:Win32/FileCryptor.K!MTB (Microsoft)
  • Encrypted File Pattern : .<Original Extension>[].[<Random>-<Random>]
  • Malicious File Creation Location : C:\Users\%UserName%\AppData\Local\Temp\how_to_decrypt.hta
  • Payment Instruction File : how_to_decrypt.hta
  • Major Characteristics :
     - Offline Encryption
     - Block multi processes and services
     - Disable system restore (vssadmin delete shadows /all /quiet, wbadmin DELETE SYSTEMSTATEBACKUP -keepVersions:0, wbadmin DELETE BACKUP -keepVersions:0, wmic SHADOWCOPY DELETE, bcdedit /set {default} recoveryenabled No, bcdedit /set {default} bootstatuspolicy ignoreallfailures)