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

  • Distribution Method : Unknown
 
  • MD5 : 77bd76f4e4b9481432022ab3b10c89c0
 
  • Major Detection Name : Ransom:MSIL/FileCoder.AD!MTB (Microsoft), Troj/Ransom-GWT (Sophos)
 
  • Encrypted File Pattern : .<4-Digit Random Extension>
 
  • Malicious File Creation Location :
     - C:\Users\%UserName%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt
     - C:\Users\%UserName%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url
     - C:\Users\%UserName%\AppData\Roaming\read_it.txt
     - C:\Users\%UserName%\AppData\Roaming\svchost.exe
     - <Drive Letter>:\surprise.exe
 
  • Message File : read_it.txt
 
  • Major Characteristics :
     - Offline Encryption
     - BiggyLocker / DODO / ONYX / Penta / Yashma Ransomware series
     - Disable system restore (vssadmin delete shadows /all /quiet, wmic shadowcopy delete, bcdedit /set {default} bootstatuspolicy ignoreallfailures, bcdedit /set {default} recoveryenabled no, wbadmin delete catalog -quiet)
     - Spreads using the "<Drive Letter>:\surprise.exe" file.

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