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Gopher Ransomware (<Original Filename>.<Original Extension> → <Base64>.LOCKEDmanager04@protonmail.com)

  • Distribution Method : Unknown
 
  • MD5 : 2c63ad93cfb6bef72ee543d09ac010f2
 
  • Major Detection Name : Trojan.FileCryptor (Malwarebytes), Trojan:MSIL/Injector.CG!MTB (Microsoft)
 
  • Encrypted File Pattern : <Original Filename>.<Original Extension> → <Base64>.LOCKEDmanager04@protonmail.com
 
  • Malicious File Creation Location : C:\Users\%UserName%\Desktop\IMPORTANT-FILES_ENCRYPTED.html
 
  • Payment Instruction File : HELP-ME-RESTORE-MY-FILES.html
 
  • Major Characteristics :
     - Offline Encryption
     - File encryption using "C:\Windows\SysWOW64\calc.exe"
     - Disable system restore (wbadmin delete catalog -quiet, bcdedit /set {default} recoveryenabled no, bcdedit /set {default} bootstatuspolicy ignoreallfailures, wmic shadowcopy delete, vssadmin delete shadows /All /Quiet)

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