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Phobos Ransomware (.id[<Random>-0001].[].phobos)

  • Distribution Method : Remote access through Remote Desktop Protocol(RDP) or Terminal Services
  • MD5 : c499e9350dfd74eba5d15fb183725e61
  • Major Detection Name : a variant of Win32/Filecoder.Phobos.A (ESET), Ransom.Phobos (Malwarebytes)
  • Encrypted File Pattern : .id[<Random>-0001].[].phobos
  • Malicious File Creation Location :
     - C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\exec.exe
     - C:\Users\%UserName%\AppData\Local\exec.exe
     - C:\Users\%UserName%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\exec.exe
     - C:\Users\%UserName%\Desktop\info.hta
     - C:\Users\%UserName%\Desktop\info.txt
     - C:\Users\Public\Desktop\info.hta
     - C:\Users\Public\Desktop\info.txt
     - <Drive Letter>:\info.hta
     - <Drive Letter>:\info.txt
  • Payment Instruction File : info.hta / info.txt
  • Major Characteristics :
     - Offline Encryption
     - CrySis Ransomware series
     - Turns off Windows Firewall (netsh advfirewall set currentprofile state off, netsh firewall set opmode mode=disable)
     - Disable system restore (vssadmin delete shadows /all /quiet, wmic shadowcopy delete, bcdedit /set {default} bootstatuspolicy ignoreallfailures, bcdedit /set {default} recoveryenabled no)